施工升降机的重要结构件包括()。
A.导轨架(标准节)
B.吊笼
C.转台
D.附着装置
E.电气系统
参考答案:A, B, D
– Why ask me to take that early bus?
--- Because that bus _______ the 9:30 train at Boston .
A.joins to
B.joins up
C.unites with
D.connects with