At the beginning of the watch the current operational parameters and the condition of all
A. noted by the bridge officer
B. told by last duty engineer
C. observed
D. in the instruction manual
查看答案
生活水平是由________衡量的。
A. 实际GDP
B. 就业
C. 人均就业
D. 人均实际GDP
E. 人口
When will an Engineer Officer in charge of watch call Chief Engineer？
活塞环的主要作用是______。
A. 散热
B. 密封
C. 布油
D. 形成油膜
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