The main difterence between a motor control circuit containing low voltage protection and low voltage release is that the latter containA.a magnetic operating coilB.normally open line contactsC.thermal-overload protectionD.a momentary-contact start button

题目
The main difterence between a motor control circuit containing low voltage protection and low voltage release is that the latter contain

A.a magnetic operating coil

B.normally open line contacts

C.thermal-overload protection

D.a momentary-contact start button

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更多“The main difterence between a motor control circuit containing low voltage protection and low voltage release is that the latter contain ”相关问题

  • 第1题：

    Which of the following characteristics must be matched depending on the specifications of thepower grid for the country a PSU will be utilized in?()

    A. Wattage

    B. Amperage

    C. Resistance

    D. Voltage


    参考答案：D

  • 第2题：

    WhichstatementistrueaboutForeignExchangeStation(FXS)portsonarouter?()

    A.TheFXSinterfaceallowsananalogconnectiontobedirectedatthepublicswitchedtelephonenetwork（PSTN’s）centraloffice.

    B.TheFXSinterfaceconnectsdirectlytoastandardtelephone，faxmachine，orsimilardeviceandsuppliesring，voltage，anddialtone.

    C.TheFXSinterfaceconnectsdirectlytoanIPphoneandsuppliesring，voltage，anddialtone.

    D.TheFXSinterfaceconnectsdirectlytoISDNvoicechannels.


    参考答案：B

  • 第3题：

    5、假设待查找区间的起始位置和终止位置分别为low和high，则二分查找算法在下面情况出现时说明找不到要查找的数据（）。

    A．low ＞high

    B．low＜high

    C．low=high

    D．low＜=high


    low ＞high

  • 第4题：

    WhichstatementsistrueaboutForeignExchangeStation(FXS)portsonarouter?()

    A.theFXSinterfaceallowsananalogconnectiontobedirectedatthepublicswitchedtelephonenetwork（PSTN’s）centraloffice

    B.theFXSinterfaceconnectdirectlytoastandardtelephone，faxmachine，orsililardeviceandsuppliesring，voltage，anddialtone

    C.theFXSinterfaceconnectdirectlytoanIPphoneandsuppliesring，voltage，anddialtone

    D.theFXSinterfaceconnectdirectlytoISDNvoicechannels


    参考答案：B

  • 第5题：

    假设待查找区间的起始位置和终止位置分别为low和high，则二分查找算法在下面情况出现时说明找不到要查找的数据（）。

    A．low ＞high

    B．low＜high

    C．low=high

    D．low＜=high


    low ＞high

  • 第6题：

    下面进行二分搜索的正确代码是

    A.def BSearch(data,x): low=0 high=len(data)-1 while(low＜=high): mid=(low+high)//2 if(data[mid]==x): return mid elif(data[mid]＜x): high=mid-1 else: low=mid+1 return -1#B.def BSearch(data,x): low=0 high=len(data)-1 while(low＜=high): mid=(low+high)//2 if(data[mid]==x): break elif(data[mid]＜x): low=mid+1 else: high=mid-1 return -1#C.def BSearch(data,x): low=0 high=len(data)-1 mid=(low+high)//2 while(low＜=high): if(data[
    表必须有序，且表只能以顺序方式存储

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