Hold No. 4 must be cleaned up to meet the ________ of the cargo surveyors
A. rules
B. necessity
C. requirement
D. statute
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Be careful when you ________ the derrick
A. operating
B. operates
C. operate
D. operated
________ were brought back to ship from the sea
A. The crew
B. The crew member
C. A person
D. The members
Where are the derricks？ They are ________
A. in deck
B. on deck
C. at deck
D. below deck
Dry powder is used to put out ________
A. electrical fire
B. oil fire
C. common fires
D. all kinds of fires
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