Daily Security Management Technology Question (12.17)
Thread Content
1 When in use, the steel wire rope should be lubricated at least ( ) times per month. Before lubrication, use a wire brush to remove dirt from the steel cable and clean it with kerosene; then dip the cable in lubricant that has been heated to above ( ), ensuring that the lubricant reaches the core of the cable. A. 2, 80℃ B. 3, 80℃ C. 2, 85℃ D. 3, 85℃ 2. The ( ) of occupational harmful factors refers to the acceptable exposure level at which workers are exposed to such factors on a repeated basis during their occupational activities, without it causing acute or chronic health damage. A. Exposure limit value B. Time-weighted average permissible concentration C. Maximum permissible concentration D. Permissible concentration for short-term exposure Reference: A, A
A-----------A
1 When in use, the steel wire rope should be lubricated at least ( A) times per month. Before lubrication, use a wire brush to remove dirt from the steel cable and clean it with kerosene; then dip the cable in lubricant that has been heated to above ( ), ensuring that the lubricant reaches the core of the cable. A. 2, 80℃ B. 3, 80℃ C. 2, 85℃ D. 3, 85℃ 2. The ( A ) of occupational harmful factors refers to the allowable exposure level at which workers are exposed repeatedly over a long period during their occupational activities, without it causing acute or chronic health damage. A. Exposure limit value B. Time-weighted average permissible concentration C. Maximum permissible concentration D. Permissible concentration for short-term exposure
This post was last edited by wzp19810708 on 2016-12-17 08:00: A, A