建筑业统计的范围是根据调查的任务,结合考虑需要而确定的统计调查所应该包含的单位。
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When the PSCO would like to witness a fire drill carried out by the crew, he should consult ()to locate a simulated fire.
A. the manager of the company
B. the surveyor of the Classification Society
C. the master of the vessel
D. the chief engineer of the vessel
三相对称电路分析计算可以归结为一相电路计算,其它两相可依次滞后120度直接写出其解释式。
A. 正确
B. 错误
在船舶上将(),应急计划合理编制,就可在发生紧急情况时,船员能迅速、有效地控制局面。