单项选择题
Second Officer, give one （）(长声).
A. blast
B. short blast
C. prolonged blast
D. prolonged blasts
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单项选择题
Where do you post your （）(火势控制图)?
A. fire control plan
B. fire control
C. fire plan
D. fire-fighting plan -
单项选择题
Send a fire （）(火势探测员) to see the situation .
A.detect
B.detector
C.watch
D.inspector -
单项选择题
Close the port side （）(通风口) .
A.ventilators
B. designated station
C. fire outfit
