题目内容

His disease is not ____________ but chronic.

A. weary
B. fragile
C. scarce
D. acute

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___________ entered the room when the phone rang.

A. Scarcely he had
B. Scarcely had he
C. Scarcely he has
D. Scarcely has he

螺旋楼梯占地少，布置灵活，可作为疏散楼梯。

A. 对
B. 错

1.低层、多层住宅阳台栏杆净高不应低于( )mm。

A. 900
B. 1000
C. 1050
D. 1100

楼梯的净高在平台处不应小于___,在楼梯段处不应小于_。楼梯扶手离地高度一般为______。