题目内容

The government forbids ______ such bad books.

A. published
B. to publish
C. publish
D. publishing

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Charles Babbage is generally considered ______ the first computer.

A. to invent
B. inventing
C. to have invented
D. having mvented

简述楼梯的组成及各部分作用。

一个楼梯段的踏步数要求最多不超过( )级,最少不少于( )级。

A. 16,2
B. 18,3
C. 20,3
D. 18,2

公共建筑内的每个防火分区,其安全出口的数量不应少于( )个。

A. 2
B. 3
C. 4
D. 5

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