生产厂房内外工作场所的井、坑、孔、洞或沟道,应覆以与地面齐平的坚固的盖板。
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When a deck cargo is secured with chain or wire lashings and grab (pear) links,which statement is FALSE?()
A. The amount of take-up is limited by the length of the turnbuckle
B. At the grab (pear) link,the slack end of chain should be led back and secured to the chain above the link
C. The lashings should be inspected each day and any slack taken up
D. The turnbuckle should be secured with a stick or lock nut
叶漏水量较大的机组,导叶全关后,机组转速很难达到25%ne,则制动转速应适当()。
A. 提高;
B. 降低;
C. 不变;
D. 可提高也可降低;
企业正在修理改造中尚未投入使用的设备称为()
A. 生产用机器设备
B. 未使用机器设备
C. 不需用机器设备
D. 融资租入机器设备