单选题Hydraulically, servo-operated, automatic, change over valves, utilized in a two ram hydraulic steering gear, serve to（）A allow an alternate main pump to start in the fully loaded condition thus developing immediate full torqueB prevent either main pump

题目

单选题

Hydraulically, servo-operated, automatic, change over valves, utilized in a two ram hydraulic steering gear, serve to（）

allow an alternate main pump to start in the fully loaded condition thus developing immediate full torque

prevent either main pump from being hydraulically motored when idle by cross pressure flow

prevent both units from operating simultaneously which could result in doubling the flow of oil and pressure leading to over pressurization of the system

all of the above

相似考题

1.Over the past 20 years, the Internet has helped change our world in way or another for the better.A. anyB. one C. everyD. either

2.What must be handed over to relieving Engineer Officer at transition of change command?

3.The “Port-Off-Stbd” selector switch on an autopilot steering stand is used to ______．A.change from hand electric steering to automatic gyroB.change over one steering system to the otherC.change over hand electric steering to non-follow-upD.change over the port to the starboard bow thruster

4.the obvious change over the past decades is the decline of the authority of the roman catholic church. ()

更多“Hydraulically, servo-operated, automatic, change over valves”相关问题

第1题：

The term （） linguistics may be defined as a way of referring to the approach which studies language change over various periods of time and at various historical stages.
Asynchronic
Bdiachronic
Ccomparative
Dhistorical comparative

B
略
第2题：

Which of the following procedures best explains how to enable the NIS name resolution to take precedence over DNS on a system-wide basis?（）
- A、 Add the following line to /etc/netsvc.conf: hosts = nis,bind,local
- B、 edit /etc/netsvc.conf to add the following: process /full/path/of/process /{ hosts = local,nis,dns}
- C、 In an NIS and DNS environment, NIS takes precedence over DNS in this environment resulting in no change
- D、 Change the NSORDER environment variable
正确答案:A
第3题：

You use the Memory Advisor to tune the memory structures of your database. What is the prerequisite to use the Memory Advisor？（）
- A、 The database must be in the ARCHIVELOG mode.
- B、 The automatic memory tuning must be enabled.
- C、 The change tracking feature must be enabled.
- D、 The automatic memory tuning must be disabled.
正确答案:D
第4题：

单选题
Which of the following is the FIRST course of action before implementing a change to a server?（）
A
Survey users to get their response to the potential server change.
B
The change should be approved by management.
C
Switch over to the alternate site so users are not affected.
D
Implement RAID so the server does not go offline.

正确答案： C
解析：暂无解析
第5题：

单选题
What will happen to associated preventive maintenance (PM) records when an asset is decommissioned?（）
A
There is no automatic method to change the PM(s) status to INACTIVE
B
The PM(s) will become in INACTIVE if 'Change the Status of All Associated PM(s) to Inactive?' is checked while decommissioning the asset
C
The only way to change the status of the PM(s) to INACTIVE is to remove the assets from the PM(s) and then change the status of the PM(s) to INACTIVE
D
If the 'Change the Status of All Associated PM(s) to Inactive?' is not selected during decommissioning, the PM(s) status will remain ACTIVE; however, work order cannot be generated from the PM having a decommissioned asset

正确答案： B
解析：暂无解析
第6题：

单选题
Unlike the globe valve, gate valves give full bore flow without change of direction, such a valve is not suitable to partially open operationAccording to the above sentence, which of the following statements is not true?（）
A
The globe valve may be suitable for partially open operation
B
The globe valve will give full bore flow with change of direction
C
The gate valve gives full bore flow with change of direction
D
The gate valve is suitable for full bore operation only

正确答案： A
解析：暂无解析
第7题：

单选题
It's too late to change your mind now, so there's no point in（）tears over it.
A
discarding
B
streaming
C
shedding
D
flowing

正确答案： C
解析：暂无解析
第8题：

单选题
If over a period of weeks the air-box pressure of a turbo-charged, diesel engine, operating at full load, appears to be dropping off, the cause can be （）.
A
open air-box drains
B
loss of cooling water to the diffuser
C
gradual fouling of the air filters
D
improperly timed exhaust valves

正确答案： A
解析：暂无解析
第9题：

单选题
When air becomes trapped in the hydraulic fluid of a steering system, the （）.
A
rudder will respond sluggishly
B
hydraulic rams will over-speed
C
sight glass will show bubbles
D
ram relief valves will lift

正确答案： B
解析：暂无解析
第10题：

单选题
If you change from a low pour point lubricant to a high pour point lubricant in a refrigeration system, （）.
A
compressor lubrication will be improved
B
oil will not leave the crankcase
C
compressor valves will be damaged
D
oil may congeal in the evaporator

正确答案： B
解析：暂无解析
第11题：

单选题
Control valves of a CO2 system may be located within the protected space when（）.
A
it is impractical to locate them outside
B
there is also a control valve outside
C
the CO₂ cylinders are also in the space
D
an automatic heat-sensing trip is installed

正确答案： A
解析：暂无解析
第12题：

单选题
Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT（）.
A
Port of origin
B
Name of vessel
C
Course and speed over ground
D
Draft of vessel

正确答案： D
解析：暂无解析
第13题：

Which of the following is the FIRST course of action before implementing a change to a server？（）
- A、 Survey users to get their response to the potential server change.
- B、 The change should be approved by management.
- C、 Switch over to the alternate site so users are not affected.
- D、 Implement RAID so the server does not go offline.
正确答案:B
第14题：

What will happen to associated preventive maintenance (PM) records when an asset is decommissioned?（）
- A、There is no automatic method to change the PM(s) status to INACTIVE
- B、The PM(s) will become in INACTIVE if 'Change the Status of All Associated PM(s) to Inactive?' is checked while decommissioning the asset
- C、The only way to change the status of the PM(s) to INACTIVE is to remove the assets from the PM(s) and then change the status of the PM(s) to INACTIVE
- D、If the 'Change the Status of All Associated PM(s) to Inactive?' is not selected during decommissioning, the PM(s) status will remain ACTIVE; however, work order cannot be generated from the PM having a decommissioned asset
正确答案:B
第15题：

单选题
You use the Memory Advisor to tune the memory structures of your database. What is the prerequisite to use the Memory Advisor？（）
A
The database must be in the ARCHIVELOG mode.
B
The automatic memory tuning must be enabled.
C
The change tracking feature must be enabled.
D
The automatic memory tuning must be disabled.

正确答案： D
解析：暂无解析
第16题：

单选题
In a hydraulic system, （） are used to protect the system from over pressure.
A
stop valves
B
check valves
C
safety valves
D
reducing valves

正确答案： B
解析：暂无解析
第17题：

单选题
Vessel required to have an Automatic Radar Plotting Aid must have a device to indicate the（）.
A
speed of the vessel over the ground or through the water
B
distance to the next port
C
time of the next navigational satellite pass
D
None of the above

正确答案： B
解析：暂无解析
第18题：

单选题
With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.
A
Call sign and IMO number
B
Course over ground and MMSI
C
MMSI number and call sign
D
Route Plan and navigational status

正确答案： B
解析：暂无解析
第19题：

单选题
In the starting system, the automatic valve is controlled by（）, and the cylinder start valves are controlled by（）
A
pilot air；pilot air
B
handle；solenoid
C
handle；pilot air coming through the distributor
D
solenoid；pilot air coming through the distributor

正确答案： B
解析：暂无解析
第20题：

单选题
“The engine not obtaining the sufficient speed for firing” means that （）.
A
the start fails
B
the fuel pumps will be put into operation
C
the fuel valves are damaged
D
the combustion process will take over

正确答案： D
解析：暂无解析
第21题：

单选题
When tuning Automatic PGA Memory Management， which of the following views will provide the information specified？（）
A
The V$PGA_TARGET_ADVICE view shows the predicted cache hit-ratio improvement if you increase PGA_AGGREGATE_TARGET
B
The V$PGA_TARGET_ADVICE view shows how the V$SQL_WORKAREA histogram will change if you change the value of PGA_AGGREGATE_TARGET
C
The V$PGA_TARGET_ADVICE_HISTOGRAM view shows how the V$SQL_WORKAREA_HISTOGRAM will change if you switch between Manual and Automatic PGA Memory Management
D
The V$PGA_TARGET_ADVICE view shows how performance will improve for the different work areas if you switch from Manual to Automatic PGA Memory Management

正确答案： B
解析：暂无解析
第22题：

单选题
Which of the following is the FIRST course of action before implementing a change to a server？（）
A
Survey users to get their response to the potential server change.
B
The change should be approved by management.
C
Switch over to the alternate site so users are not affected.
D
Implement RAID so the server does not go offline.

正确答案： D
解析：暂无解析
第23题：

单选题
When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas)，you should （）.
A
attempt to isolate the fire from the LPG
B
cool the bottles or remove them from the fire area
C
see that the valves on all LPG bottles are closed
D
place insulating material over the bottles

正确答案： B
解析：暂无解析

单选题Hydraulically, servo-operated, automatic, change over valves, utilized in a two ram hydraulic steering gear, serve to（）A allow an alternate main pump to start in the fully loaded condition thus developing immediate full torqueB prevent either main pump

题目

相似考题

更多“Hydraulically, servo-operated, automatic, change over valves”相关问题

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