题目内容

When the Pilot is embarked he or she （）.

A. relieves the Master of his duties
B. is solely responsible for the safe navigation of the vessel
C. is a specialist hired for his or her local navigational knowledge
D. relieves the officer of the watch

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链条葫芦使用前应检查什么内容？

下列各项，不属慢性呼吸衰竭的是（）

A. 明显发绀
B. 智力或定向功能障碍
C. PaO₂80mmHg
D. PaCO₂45mmHg
E. pH7.45

“6683调拨申请撤销”交易成功，原调拨申请交易（）。

解释概念：原杂基、正杂基、淀杂基、外杂基、假杂基.