To safeguard the operator and other personnel working on or

【名词&注释】

适航性(airworthiness)、负责人(person in charge)、公安消防(police fire protection)、绝大多数(most)、海事局(marine administration)、船级社(classification society)、鉴定书(expertise report)、港务监督(harbor superintendency)

[单选题]To safeguard the operator and other personnel working on or near a hoisting operation, which of the following precautions should be observed?

A. Keep a load on the hoist until all personnel are finished working
B. Set the load on a movable dolly when transportation may be needed
C. Have one man keep a hand on the load to steady it
D. Insure that the lifting gear capacity is not exceeded

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举一反三：

[单选题]船舶、设施发生火灾、爆炸等事故，船长、设施负责人必须申请______鉴定，并将鉴定书^{(expertise report)}副本送交港务监督^{(harbor superintendency)}备案。

A. 公安消防监督机关
B. 海事局
C. 船级社^{(classification society)}
D. 保险公估公司

[单选题]凡中国藉船舶在发生下列何种情况时，必须向船舶检验机构申请附加检验______。

A. 年度检验在周年日过后3个月内应申请附加检验
B. 在限定航区内改变航线应申请附加检验
C. 因事故影响到船舶的适航性，修复后应申请附加检验
D. 中间检验如在第三个周年日前或后3个月进行就应申请附加检验

[单选题]当空气中氧的含量降至______以下时，绝大多数物质的燃烧就会停止。

A. 11%
B. 18%
C. 21%
D. 16%

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