Question

一.单选题(共20题,共40分)
45.in the laboratory, (). (2分)
○a.using knife switches, wooden distribution boards and flower lines
○b. free to pick and pull wires
○c. fixed power outlets must not be disassembled and rerouted without permission

Explanation:

• Option A: Knife switches, wooden distribution boards and flower lines are not safe or standard in a laboratory.
• Option B: Free to pick and pull wires is extremely dangerous and violates laboratory safety rules.
• Option C: Fixed power outlets must not be disassembled and rerouted without permission is a correct safety rule in the laboratory.

Answer:

C. Fixed power outlets must not be disassembled and rerouted without permission