题目内容

The helm command PORT TWENTY means（）.

A. change course twenty degrees to the left
B. put the rudder left twenty degrees
C. put the rudder hard left for the first twenty degrees of swing
D. put the rudder left twenty degrees and then ease back as the vessel starts swinging

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The helm command PORT TWENTY means（）.

A. change course twenty degrees to the left B. put the rudder left twenty degrees C. put the rudder hard left for the first twenty degrees of swing D. put the rudder left twenty degrees and then ease back as the vessel starts swinging

理解弗雷格“含义”与“指称”的思想

夜航中如需要用灯光时，应（）.

测定维生素C样品含量时，为何要加入酸溶液？

下列哪种情况会导致代谢性酸中毒，无代偿形成（）.

A. change course twenty degrees to the left
B. put the rudder left twenty degrees
C. put the rudder hard left for the first twenty degrees of swing
D. put the rudder left twenty degrees and then ease back as the vessel starts swinging