Safety Technology Exchange Edition: Daily Question (2016.7.8)
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1.jpg1. When it is necessary to warn people about certain actions, ____ should be installed. A. Safety device B. Warning sign C. Positioning device D. Sound-insulating device 2. Under any circumstances, the insulation resistance must not be less than ____ ohms per volt of operating voltage, and it must comply with the provisions of relevant professional standards. A.100 B.200 C. 500 D.10003. ____ requires constant attention to preventing safety accidents at work. A. Prevention first B. Safety first C. Comprehensive management D. Always prepared B;D;A
1. When it is necessary to warn people about certain actions, ____ should be installed. B. Warning signs 2. Under any circumstances, the insulation resistance must not be lower than ____ ohms per volt of operating voltage, and it must comply with the provisions of relevant professional standards. D.10003, ____ requires constant attention to preventing safety accidents at work. A. Prevention first
1.B. Warning signs 2. D.1000 3.A. Prevention first
1. B. Warning sign. 2. D.1000. 3、A. Prevention first