下列哪一种现象的描述能说明分子在不停地运动 [ ] A. 沙尘漫天 B. 花香四

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问题:

下列哪一种现象的描述能说明分子在不停地运动 [ ]

A. 沙尘漫天

B. 花香四溢

C. 落叶纷飞

D. 瑞雪飘飘

考点:分子的热运动
题型:选择题

阅读下面短文,然后根据括号内所给汉语意思写出单词的正确形式(每空一词)

A boy carefully led his blind father to a seat in a noodle restaurant .

He called loudly for two bowls of beef noodles. When the restaurant owner was about to prepare the food, the boy suddenly 小题1:  (挥手,挥动)to him and whispered, “Only one bowl with beef ,the other without ---just plain noodles.”

小题2: (事实上)the boy had a light purse and couldn’t  小题3:  (买得起)two bowls of beef noodles. He called just for his father to know.

When the noodles were  小题4:   (为..端上,服务,招待),the father wasn’t in a hurry ; he used his chopsticks to search in his bowls ,trying to find a slice of beef. As soon as he succeeded in finding one, he picked it up and put it into his 小题5:  (儿子) bowl, saying   小题6:  (和善地,和蔼地), “Eat some more. Have enough food so as to study well.”

The boy accepted in 小题7:  ( 沉默,寂静) and then stealthily put the beef back to his father’s bowl.

Moved by what they had done, the restaurant owner asked a waiter to bring them a small side dish from the kitchen. The boy took小题8:他) for sending to a wrong table, but the owner came up explaining with a 小题9:   (微笑), “Today is my restaurant’s anniversary(周年纪念日).The dish is free.”

After they left, the owner cleared the bowls from the table and found some coins   小题10: (在……下) one of them. The sum is just the price of the dish. 

题型:选择题

鱼精蛋白对抗肝素使凝血正常是通过阻止了哪一抗凝酶的作用()

A.抗凝血酶Ⅰ

B.抗凝血酶Ⅲ

C.抗凝血酶Ⅷ

D.抗凝血酶X

E.抗凝血酶Ⅻ

题型:选择题

在普通道路驾车遇暴雨,刮水器无法改善驾驶人视线,此时要采取的措施是:

A.减速行驶

B.集中注意力谨慎驾驶

C.立即减速靠边停驶

D.以正常速度行驶

题型:选择题

下面常用的体质测量指标中,属于身体形态指标的是:()

A、体重

B、血压

C、台阶指数

D、灵敏性

题型:选择题

为什么要设置给水泵最小流量保护?

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