封油泵的出口有两路：一路去各封油注入点，一路返回封油罐。
查看答案
封油系统的压力靠返回量控制。
A. 正确
B. 错误
个案工作者要尽早对案主做出一些承诺，以促进专业关系的建立。
A. 正确
B. 错误
An upright vessel has negative GM. GM becomes positive at the angle of loll because the（）.
A. free surface effects are reduced due to pocketing
B. KG is reduced as the vessel seeks the angle of loll
C. effective beam is increased causing BM to increase
D. underwater volume of the hull is increased
详细数据记录用于对设备工作状态、过程进行详细分析，可连续记录（）小时。
A. 2
B. 8
C. 16
D. 24
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