A crankshaft whose center of gravity coincides with its center line is said to be （）.<br>A:dynamically balanced<br>B:statically balanced<br>C:counter balanced<br>D:resonantly balanced

A crankshaft whose center of gravity coincides with its center line is said to be （）.
A:dynamically balanced
B:statically balanced
C:counter balanced
D:resonantly balanced

出自：海船船员证

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