4级灾难恢复的技术和管理支持备用基础设施要求有哪几项（） A.有符合介质存放条件的备

首字母填空。

     One day the sun and the wind had a quarrel (争吵). The sun said he was s__1__ than the wind. And

the wind said he was stronger than the sun. Just then they saw a man walking down below, w__2__ a

hat and a coat on. The sun said, "Let's see who can make the man t__3__ off his hat and the coat. If you

can do that m__4__ quickly than I, then you are the stronger."

     "All right," said the wind, "I'll try f__5__." So the wind began to blow. But the h__6__ he blew, the

tighter the man h__7__ his hat and coat. The wind could not make him take them off.

     Then the sun t__8__. It shone quietly. Soon the man took off his hat and wiped his forehead (前额).

The sun began to s__9__ a little brighter, and the man took off his coat. It shone harder still, and the man

began to take off his shirt. Then the wind said to the sun, "That's e_10__. You are stronger than I."

牙髓中最多的胶原是（）

A.Ⅰ型胶原

B.Ⅱ型胶原

C.Ⅲ型胶原

D.Ⅳ型胶原

E.Ⅴ型胶原

木材含水率在纤维饱和点以上时，随含水率的增加（）。

A.强度不变

B.体积不变

C.强度下降

D.体积收缩

E.强度增加

F.体积膨胀

婴儿腹泻经输液脱水纠正，出现精神萎靡、腹胀、心音低钝，首先应考虑为

A．低血钙
B．低血镁
C．低血糖
D．低血钾
E．代谢性酸中毒

在高速电气化铁路中，接触悬挂向电力机车传送电能的过程，称为（）。