To avoid damaging the components of a printed circuit board when testing it with a DC volt-ohmmeter, you should （）
- Aground the board
- Bavoid reversing the polarity of the leads
- Cisolate sensitive components with heat sinks
- Dall of the above
问题
To avoid damaging the components of a
参考解析：
分类：船舶电气与船舶安全题库
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