单选题（）is not an advice be observed when samples are taken in tanks containing volatile petroleum products.A Filter masks with a combination filter should be brought and used whenever necessaryB Only explosion-proof equipment（marked EEx）should be usedC Avoi

题目
单选题
（）is not an advice be observed when samples are taken in tanks containing volatile petroleum products.
A

Filter masks with a combination filter should be brought and used whenever necessary

B

Only explosion-proof equipment（marked EEx）should be used

C

Avoid breathing petroleum gases，especially if they come from sour crude（smell of rotten eggs）

D

so far as possible，take early and substantial action to keep well clear

相似考题

1.If you ______ my advice, you wouldn’t be in such trouble now.A. tookB. takesC. has takenD. had taken

2.If they had taken my advice, they _______ .A、had wonB、could wonC、should winD、could have won

3.When could the risk of asbestos disappeared according to the passage?A) When we adopt the researchers' advice.B) When we don't use asbestos.C) For many years from now, it will not disappear.D) The council have already find ways to prevent the risk.

4.Food should be taken in moderate quantity only when one feels hungry.

参考答案和解析
正确答案： D
解析： 暂无解析
更多“（）is not an advice be observed when samples are taken in tan”相关问题

  • 第1题：

    What procedures should be taken when you receive helm orders as a helmsman?


    正确答案：The helmsman should take three procedures orderly when he receives the helms orders, that is to repeat, carry out and report. The helmsman should answer the helm orders clearly and loudly. When the ship does not answer the wheel, the helmsman should report it immediately to the person giving the orders.

  • 第2题：

    A vessel is "in sight" of another vessel when ______.

    A.she can be observed by radar

    B.she can be observed visually from the other vessel

    C.she can be plotted on radar well enough to determine her heading

    D.her fog signal can be heard


    正确答案：B

  • 第3题：

    An on-load release system on a survival craft means the cable can be released ______.

    A.only when the load is taken off the cable

    B.only when there is a load on the cable

    C.only when activated by the controls at the lowering station

    D.at any time


    正确答案：D
    带有压力释放器的救生艇筏可用手动等方式在任何时间落放。

  • 第4题：

    When the derrick is topped, the guys must be （）.

    • A、slacked off
    • B、send away
    • C、taken in
    • D、send out

    正确答案:A

  • 第5题：

    In which three cases does a checkpoint occur？ （）

    • A、Every three minutes.
    • B、When a log switch occurs.
    • C、When forces by an administrator.
    • D、When a tablespace is taken offline normal.
    • E、When the redo buffer is one-third full.

    正确答案:B,D,E

  • 第6题：

    单选题
    0il product samples should be taken from the（）.
    A

    dock riser

    B

    ships cargo tanks

    C

    shore tank discharge

    D

    All of the above


    正确答案： A
    解析： 暂无解析

  • 第7题：

    填空题
    If he had taken his lawyer’s advice, he (save) ____ himself a great deal of trouble.

    正确答案： would have saved
    解析：
    本题考查虚拟语气。句意：如果他听从了律师的建议，就会给自己省去很多麻烦。虚拟语气中，主句用过去完成时，从句就得用would/ could have done。故填入would have saved。

  • 第8题：

    单选题
    A vessel is in sight of another vessel when she（）.
    A

    can be observed by radar

    B

    has determined that risk of collision exists

    C

    is sounding a fog signal which can be heard on the other vessel

    D

    can be observed visually from the other vessel


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    When many American parents don’t know how to deal with their children they seek advice from the following EXCEPT_____.
    A

    neighbors

    B

    parent training courses

    C

    books

    D

    lectures


    正确答案： D
    解析：
    细节题。由“Many American parents do not know how to deal with their teenagers and seek advice from books, lectures, and parent training courses”可知，选项A并没有提及。

  • 第10题：

    单选题
    When discharging bilge water, which criteria must be observed?（）
    A

    The requirement for the oil content of bilge water discharged is 15 ppm

    B

    No discharge in sensitive waters

    C

    Any discharge in sensitive waters

    D

    International, national or local requirements have to be observed


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    An on-load release system on a survival craft means the cable can be released（）.
    A

    only when the load is taken off the cable

    B

    only when there is a load on the cable

    C

    only when activated by the controls at the lowering station

    D

    at any time


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    When summer comes and the light-colored people go to the beaches,  ______.
    A

    all of them will tan darkly

    B

    few of them will tan -darkly

    C

    many of them will not tan at all

    D

    few of them will not tan at all


    正确答案： D
    解析：

  • 第13题：

    It should be observed ______ the master is not bound to show both the number of packages and the weight．

    A.that

    B.which

    C.where

    D.when


    正确答案：A

  • 第14题：

    The tanks should then be ______ immediately after the measurements or cargo samples have been taken．

    A.topped up

    B.braced

    C.tommed down

    D.re-pressurized


    正确答案：D

  • 第15题：

    When the derrick is stopped, the guy must be （）(收好).

    • A、taken in
    • B、slacked off
    • C、adjusted
    • D、stowed

    正确答案:D

  • 第16题：

    The consignment certainly does not match the samples（）you sent us last month.

    • A、these
    • B、-
    • C、what
    • D、when

    正确答案:B

  • 第17题：

    单选题
    An amplitude of the Sun in high latitudes（）.
    A

    is most accurate before sunrise

    B

    is most accurate after sunset

    C

    should only be observed when the Sun's lower limb is above the horizon

    D

    is most accurate when the Sun's center is observed on the visible horizon


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    At 0400 your vessel is dead in the water and in heavy fog. Your loran set fixes your position at LAT 41°12.1’N，LONG 72°43.5’W. Bottom samples are taken and indicate a composition of soft mud and shell. Your fathometer reads 40 feet. If the vessel draws 9 feet of water，which of the following is TRUE?（）
    A

    The bottom samples and fathometer reading prove the loran fix is reliable

    B

    The bottom samples and fathometer readings indicate that the loran fix is unreliable

    C

    The information collected indicates that the fathometer may be in error

    D

    The information collected indicates that the chart is most likely in error


    正确答案： A
    解析： 暂无解析

  • 第19题：

    单选题
    Vessels shall be deemed to be in sight of one another only when one（）from the other.
    A

    can be observed visually

    B

    can be observed by radar

    C

    can be located on the radar

    D

    can be heard


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    （）is not an advice be observed when samples are taken in tanks containing volatile petroleum products.
    A

    Filter masks with a combination filter should be brought and used whenever necessary

    B

    Only explosion-proof equipment（marked EEx）should be used

    C

    Avoid breathing petroleum gases，especially if they come from sour crude（smell of rotten eggs）

    D

    so far as possible，take early and substantial action to keep well clear


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    If you ______ my advice，you ______ your failure now. You ______ your victory.
    A

    took...wouldn’t cry over...would celebrate

    B

    had taken...wouldn’t have cried over...would have celebrated

    C

    had taken...aren’t crying over...are celebrating

    D

    had taken...wouldn’t be crying over...would be celebrating


    正确答案： A
    解析：
    句意：如果你采纳我的建议，现在就不会为自己的失败而哀叹，而是在为你的成功而庆祝了。本题为混合虚拟语气。当主句与从句时态不一致时，主句与从句分别使用与各自时态相应的虚拟语气。此处从句与过去事实相反，主句与现在事实相反。

  • 第22题：

    单选题
    A vessel is “in sight” of another vessel when（）.
    A

    she can be observed by radar

    B

    she can be observed visually from the other vessel

    C

    she can be plotted on radar well enough to determine her heading

    D

    her fog signal can be heard


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Oil product samples should be taken from the（）.
    A

    dock riser

    B

    ship's cargo tanks

    C

    shore tank discharge

    D

    All of the above


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    When many American parents don’t know how to deal with their children they seek advice from the following EXCEPT _____.
    A

    neighbors

    B

    parent training courses

    C

    books

    D

    lectures


    正确答案： D
    解析：
    细节题。由“Many American parents do not know how to deal with their teenagers and seek advice from books, lectures, and parent training courses”可知，选项A并没有提及。

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