闸瓦悬吊位置的设计应使闸瓦托吊的中心线与闸瓦托中心同车轮中心连线()。
A.成锐角
B.成直角
C.成钝角
D.平行
参考答案:B
Most of the people think they should of the hotel’s facilities when they are in hotel.
A.take the advantage
B.take advantage
C.take an advantage
D.have the advantage
输入行李、货物舱位的指令正确的是()
A.LADD
B.LPDD
C.LODD
D.LPAD