球罐要求进行基础沉降观测，主要观测的阶段是( )。A．充水前

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问题多项选择题

球罐要求进行基础沉降观测，主要观测的阶段是( )。

A．充水前

B．充水到1/3、2/3球缸本体高度时

C．充满水24小时及放水后

D．充水到1/2球缸本体高度

答案

参考答案：A,B,C

阅读理解

让我们一起走进阅读乐园吧！阅读短文，根据短文内容判断句子正(T)误(F)。

I'm a teacher. My name is Wang Ping. I'm from Shanghai. I usually get up at six and have breakfast at six

thirty. I go to work at seven. I like singing, dancing (跳舞) and swimming (游泳). I like singing best.

( ) 1. The teacher's name is Wang Ping.

( ) 2. She's from Beijing.

( ) 3. She usually gets up at six thirty.

( ) 4. She likes dancing best.

( ) 5. She likes singing.

单项选择题

天然气甘醇脱水装置中，重沸器的火管形状一般为（）

A.L形

B.M形

C.N形

D.U形