The engine may lose power or slow down during running, when this occurs, the first cause possible may be hot bearings and （） of the pistons in the cylinders.<br>A:crack<br>B:knocking<br>C:leaking<br>D:seizure

The engine may lose power or slow down during running, when this occurs, the first cause possible may be hot bearings and （） of the pistons in the cylinders.
A:crack
B:knocking
C:leaking
D:seizure

出自：海船船员证

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