PE管材质轻，焊接工艺简单，施工方便，工程综合造价低，但（）较_爱下问搜题

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问题单项选择题

PE管材质轻，焊接工艺简单，施工方便，工程综合造价低，但（）较低，宜受外力破坏。

A、强度

B、韧性

C、可塑性

D、耐腐蚀性

答案

参考答案：A

选择题

—Maria isn’t at home .

A．out

B．for

C．with

D．in

填空题

用方框中所给词组的适当形式填空。

go off; take place; take away; compared to; depend on

1. Don't _______ your parents all the time. You should work by yourself.
2. Huanghe Road is quite busy _______ Jiaozhou Road.
3. Now more and more factories _______ animals' land and forests.
4. I was doing my homework last night when the lights _______.
5. In the last five years, great changes _______in our city.