为了方便排水，砂土类地面排水坡度宜采用( )。A．0.3%～0.5% B．＜1%

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问题单项选择题

为了方便排水，砂土类地面排水坡度宜采用( )。

A．0.3%～0.5%

B．＜1%

C．＜3%

D．3%～5%

答案

参考答案：C

选择题

Not until the 11th century, when a young lady brought a fork to Italy, _______.

A．and the custom reached Europe.

B．that the custom reached Europe.

C．did the custom reach Europe.

D．so did the custom reach Europe.

单项选择题

外国人在中国就业实行行政许可，必须具备年满( )周岁。

A．14

B．16

C．18

D．20