A few spots of turbocharger can be caused by（） ①crash stop of engine ② rapid increased of engine speed<br>A:①only is correct<br>B:②only is correct<br>C:both ① and ②are correct<br>D:neither ① or ② correct

A few spots of turbocharger can be caused by（） ①crash stop of engine ② rapid increased of engine speed
A:①only is correct
B:②only is correct
C:both ① and ②are correct
D:neither ① or ② correct

出自：海船船员证

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