机械在下坡时严禁()。在陡坡上严禁()。在山丘弯道或斜坡上行驶时,应降低行驶速度,转弯时不宜过猛。
A、空挡滑行
B、低速行驶
C、换挡掉头
D、开快车
参考答案:A, C
The Titanic was a ship just not____ to run into icebergs.When it did,nothing could stop its journey to the bottom.
A.design
B.to design
C.designed
D.designing
一台织布机0.4小时织布2.5米,这台织布机织1米布要用______小时,每小时能织布______米.