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单选题
在高压环境下工作时，应遵守安全注意事项。
A
A.Obey the safety precautions when you do work with high voltages.
B
B.When working with high resistances, you should follow the safety precautions.
C
C.The safety precautions are optional in an environment with high voltages.
答案解析
正确答案：A
解析：
在高压环境下工作时，必须遵守安全注意事项，以确保工作人员的安全。因此，正确答案是A.Obey the safety precautions when you do work with high voltages.
相关知识点：
高压工作，遵守安全项
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