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【单选题】
有关线切割机床安全操作方面,下列说法正确的是( )。
A.
当机床电器发生火灾时，可以用进行灭火
B.
由于线切割机床在加工过程中的放电电压不高，所以加工中可以用手接触工件或机床工作台
C.
线切割机床在加工过程中产生的气体对操作者的健康没有影响
D.
当机床电器发生火灾时，应用四氯化碳灭火器灭火
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