题目内容

小型构件装配式楼梯常用的形式有( )。

A. 悬挑式楼梯
B. 墙承式楼梯
C. 梁承代楼梯
D. 板式楼梯
E. 梁板式楼梯

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小型构件装配式楼梯小型构件包括( )等单个构件。

A. 踏步板
B. 空心板
C. 平台板
D. 斜梁
E. 平台梁

下面关于楼梯构造要求的叙述中,( ) 正确。

A. 每个梯段的踏步数在3~18步
B. 允许坡度23-45度
C. 足够通行宽度即可
D. 平台宽度不小于1.5m
E. 踏步高和踏步面宽之和一般为450mm

But for your support then, I don’t think we ____the task.

A. can manage
B. could have managed
C. could manage
D. can have managed

His parents suggested that he ____ at home preparing the lessons, but he disagreed.

A. stay
B. staying
C. stays
D. stayed

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