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Mechanical gearing of deck machinery such as the windlass or boat hoists should().

单选题
2022-02-23 21:49
A、be open to view so,if a foreign object gets in the gearing,the operator can immediately stop the machinery
B、have a guard over the gearing
C、be painted a contrasting color from the base color in order to call attention to the gearing
D、not be operated if there is any crew within 10 feet of the machinery
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正确答案
B

试题解析

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