In twin-screw engine installations while going ahead，maneuvering qualities are most effective when the tops of the propeller blades both turn（）.<br>A:to starboard<br>B:outboard from the center<br>C:to port<br>D:inboard toward the center

In twin-screw engine installations while going ahead，maneuvering qualities are most effective when the tops of the propeller blades both turn（）.
A:to starboard
B:outboard from the center
C:to port
D:inboard toward the center

出自：海船船员证

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