When required to work where there may be explosive gases, you should use tools which are （）<br>A:approved by the Coast Guard<br>B:high carbon steel<br>C:fixed with a ferrous cover<br>D:nonsparking

When required to work where there may be explosive gases, you should use tools which are （）
A:approved by the Coast Guard
B:high carbon steel
C:fixed with a ferrous cover
D:nonsparking

出自：海船船员证

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