题目内容

In restricted visibility the safe speed of a vessel without operational radar may be ________ enable effective avoiding action to be taken on sighting another ship．

A. too low to
B. too high to
C. too high for
D. too low for

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Halogenated hydrocarbon， Halon in short form，is used on board ship as ________ ．

A. fire-extinguishing medium
B. a standard fire test
C. a non-combustible material
D. a fire main

Freeboard is a measure of which of the following？Ⅰ．The amount of reserve buoyancy．Ⅱ．The initial stability of the vessel．

A. Ⅰ only
B. Ⅱ only
C. Both Ⅰ and Ⅱ
D. Neither Ⅰ nor Ⅱ

人力资源专指脑力劳动者，不包括体力劳动者.()

Goods may be dangerous not merely by reason of the fact that they may endanger the safety

A. detain
B. be detained
C. be detaining
D. detains