题目内容

To determine the number of portable fire extinguishers required on an inspected vessel，you

A. hot work permit
B. Certificate of Inspection
C. Safety of Life at Sea Certificate
D. station bill

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______ should be consulted to obtain the information concerning port documents required by

Admiralty Notices to Mariners
B. SOLAS
C. Admiralty Sailing Directions
D. Guide to Port Entry

电力电缆的截面在()以上的，必须用线鼻子或接线管连接。

A. 10mm2
B. 25mm2
C. 50mm2

热继电器可作为电动机的()。

A. 短路保护
B. 欠压保护
C. 过载保护

万用表不用时应把旋钮放在()。

A. 直流档
B. 电阻挡
C. 交流档