只在桥不太高的旱地上采用拱桥轻型墩的是（）。
A.悬臂式单向推力墩
B.八字形桥台
C.背撑式桥台
D.带三角杆件的单向推力墩
参考答案：D
He hurried out into the street and was knocked down by a ____ bike. He had his right arm ____.[ ]
A. past, hurt
B. passing, broke
C. passed, harm
D. passing, hurt
除另有规定外，颗粒剂辅料的用量不宜超过稠膏量的（）
A.9倍
B.8倍
C.7倍
D.6倍
E.5倍
