建筑安全技术用起重机械吊运模板等材料时，被吊的模板构件和材料

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问题单项选择题

建筑安全技术

用起重机械吊运模板等材料时，被吊的模板构件和材料应捆牢，起落应听从指挥，吊重物下方( )禁止人员停留。

A．1m

B．2m

C．3m

D．回转半径内

答案

参考答案：D

阅读理解

阅读理解。

Sophia is very happy these days. The 13-year-old girl from the UK has a lot of fun during her trip

in Beijing. She eats dumplings, tries Chinese calligraphy (书法), climbs the Great Wall and speaks

Chinese, all for the first time!

She even stays with a Chinese family for a week. "Beijing is very big and beautiful. And the people

here are very nice!" She says. Sophia comes with her teachers and classmates from the UK. The students

in Shangdi Experimental Primary School of Haidian District receive them. These two schools are "Heart

to Heart" schools. There are 200 "Heart to Heart" schools in Beijing. Each of them has a partner school

in a foreign country. They meet and get to know each other.

1. How old is Sophia?

A. 15

B. 14

C. 13

D. 11

2. How long did Sophia stay with a Chinese family?

A. Two days.

B. Seven days.

C. A year.

D. 6 months.

3. What did Sophia think of Beijing?

A. Big.

B. Beautiful.

C. Exciting.

D. A and B.

单项选择题

若P（X≤x₂）=0.6，P（X≥X₁）=0.7，其中X₁，则P（x₁≤X≤x₂）的值为（）。

A.0.6

B.0.7

C.0.1

D.0.3