A.40% B.45% C.50% D.55%
A.對(duì)著火段輸煤棧橋電氣設(shè)備停電 B.滅火時(shí)應(yīng)在火勢(shì)的下方,傾斜皮帶應(yīng)站在皮帶的尾部 C.現(xiàn)場(chǎng)濃煙較大時(shí),未戴防毒面具的滅火人員應(yīng)堅(jiān)守陣地,協(xié)助滅火 D.使用現(xiàn)場(chǎng)滅火器材和消防水、沖洗水進(jìn)行滅火
A.11點(diǎn)鐘至1點(diǎn)鐘 B.10點(diǎn)鐘至2點(diǎn)鐘 C.8點(diǎn)鐘至4點(diǎn)鐘 D.7點(diǎn)鐘至5點(diǎn)鐘