岩石风化后，形成的主要产物有（）。A.石英、长石、岩屑 B.碎屑物质、粘土物质、溶解

补全对话。根据对话内容，补全对话，使其完整﹑通顺。每空一词。

A. We have many rules at school.

B. (1)            do we. For example, we have to (2)            school uniforms every school day.

A. We usually do, too. We are not allowed to play soccer at school because we don't have a soccer field.

B. Oh, we are lukier than you. We have a big soccer field but we can only (3)             it in P.E.

A. Our teachers are very (4)            to us but sometimes they are strict. I think it's good for us.

B. I (5)            with you. I'll miss them when I graduate.

高渗性脱水的体液量改变特点为()

A．细胞外液与内液等量丧失

B．细胞内液显著减少，细胞外液轻度减少

C．细胞外液显著减少，细胞内液轻度减少

D．细胞内液减少，细胞外液正常

E．细胞外液减少，细胞内液正常

基本偏差为a~h的轴与基本偏差为H的孔可构成______配合。

A．间隙

B．过渡

C．过盈

D．不确定

简报的导语可以采用新闻导语法，直接切入简报主题或交代事件要素；也可以采用公文导语法，交代行文根据与目的，以便引起读者关注。

喷射式真空泵主要由（）等部件组成。

A、动力蒸汽喷嘴

B、混合室

C、扩散管

D、冷却器