A.機(jī)器設(shè)備 B.人的因素 C.操縱設(shè)備 D.避碰設(shè)備
A.最低 B.最高 C.統(tǒng)一 D.行業(yè)
A.8%/8% B.5%/5% C.8%/5% D.5%/8%