Your ship is steaming at night with the gyropilot engaged. You notice that the vessel’s course is slowly changing to the right. Which action should you take FIRST?（）.
A. Notify the engine room of the steering malfunction
B. Change to hand steering
Call the Master
D. Send the Quartermaster to the emergency steering statio
查看答案
抽采系统投入运行前，应进行一次全面气密性实验。一般采用压风正压实验法，试漏气压要达到0.3――0.5Mpa。以实验时间不少于2小时、压力降不大于5%为合格。
A. 正确
B. 错误
硫化氢为强烈的神经毒物，其接触限值为（）
A. Ａ、5mg/m3
B. Ｂ、10mg/m3
C. Ｃ、15mg/m3
D. 20mg/m3
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