题目内容

______20 targets can be tracked at one time.When maximum tracking capacity is reached,no further acquisitions(捕获) are possible.

As many as
B. So many as
C. As much as
D. As more as

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______the survivors know more of how to cope with cold water in the sinking of MV Titanic

A. Have / could have been saved
B. Have / could have saved
C. Had / could has saved
D. had / could have been saved

______should be used during the poor visibility if the rader’s screen shows heavy sea returns.

A. Gain Control
Brilliant Control
C. Anti-clutter Sea Control
D. Sweep Intercept

______of the following is (are) required on your cargo vessel when it has a refrigerated cargo space? ① A gas mask using a suitable canister to protect against the refrigerant. ② A self-contained breathing apparatus.

A. ① only
B. Either ① or ②
C. ② only
D. Neither ① nor ②

______of the following conditions will cause a vessel’s bottom to be subjected to tension

A. Concentration of weight aft
B. Concentration of weight forward
Concentration of weight amidships
D. Concentration of weight at both ends of the vessel

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