隐框玻璃幕墙的玻璃面板制作采用双组分硅酮结构密封胶，其在室内的养护时间为()。A.4

单词拼写 。

1. He wished to be an ______(天文学家)when he was a child.

2. We can _____(预言)from this information what is likely to happen next.

3. Hundreds of people were _____(受伤)when the train went off the rails.

4. I intended to give you the card on Saturday but I ______(完全地)forgot.

5. He changed the bad queen into a _____(丑陋的)woman.

6. He had great difficulty in learning English ______(语法) at first.

7. The new owners have tried to give the restaurant a more family-friendly_____(氛围).

8. He tried to educate his son's_____(爱好)in English.

9.The old couple _____(雇佣)a person to look after their garden every autumn.

10. Each group shall _____(由...组成)of not less than ten.

设C₁、C₂为两比较方案的年经营成本，C₂＜C₁，K₁、K₂为两个比较方案的全部投资，且K₂＞K₁，静态差额投资回收期是( )。

A．(C₂-C₁)/(K₂-K₁)

B．(C₂-C₁)/(K₁-K₂)

C．(K₂-K₁)/(C₁-C₂)

D．(K₂-K₁)/(C₂-C₁)

缺血性周围性发绀可见：于

A．缩窄型心包炎

B．下肢静脉曲张

C．雷诺(Raynau病

D．发绀型先天性心脏病

E．血栓性静脉炎

简述空压机单机运行过程？

合金固溶强化的主要原因是（）

A.晶格类型发生了变化

B.晶粒细化

C.晶格发生了畸变

D.以上答案都对