起货电动机采用()制动不能使起货机落货时实现匀速落货。
A.能耗
B.电源反接
C.再生
D.倒拉反接
参考答案:B
下列带横线的字注音正确的是[ ]
A.拽(zhuài ) 怏怏(yànɡ) 吞噬(wū)
B.羸弱(yīnɡ ) 告罄(qìnɡ) 虞(yǘ )
C.斫痕(zhuó) 泅渡(qiú) 砭骨(biān)
D.阴霾(lí) 余暇(xiá) 崔巍(wēi)
Steve, could you help me ___________ when the plane will take off on the Internet?
-I'm sorry, my computer doesn't work.[ ]
A. get on
B. find out
C. look for
D. look after