一个直角三角板的两条直角边分别为a、b.以a为轴旋转一周,得到一个______,

题型:解答题

问题:

一个直角三角板的两条直角边分别为a、b.以a为轴旋转一周,得到一个______,它的高是______,底面直径是______

A.圆柱 B.圆锥 C.三角形 D.a E.2b.

考点:图形与变换(平移和旋转)
题型:解答题

冬季的某日,上海最低气温是3℃,北京最低气温是-5℃,这一天上海的最低气温比北京的最低气温高______℃.

题型:解答题

Dick was born in a poor family. His father had a small boat and went fishing in the morning and sold the fish in the market in the afternoon. Then he bought some food for his family. When winter came, they were often hungry. One morning the hungry man fell into the river and wasn’t found. Dick’s mother left her three-year-old son without saying good-bye. His aunt had to look after him.
Twenty years passed. Dick became a tall, p man. He found work on a farm. He worked hard and wanted to get more money. He often went to see his aunt with some nice presents. The woman was very happy but one day she died in a traffic accident. The young man was very sad. After he buried her, he decided to buy a beautiful tombstone(墓碑)for her. He went to town and came in a shop, but all the tombstones were too expensive. He asked, "Do you sell an old tombstone, sir" "Yes, we do, sir," answered the shopkeeper. "Is it as expensive as the new one"
"No, it’s much cheaper," said the man. "But another name was engraved (刻) on it." "It doesn’t matter," said Dick. "My aunt couldn’t read.\

If ______, the family members were hungry.

A.Dick’s father could catch no fish in winter

B.Dick’s father had a boat in winter

C.Dick’s father had to look after him in winter

D.no food was sold in winter

题型:解答题

在护理程序中,指导护理活动的思想核心是

A.以完成的护理工作内容为中心

B.以医院管理的重点任务为中心

C.以维护医护人员的利益为中心

D.以执行医嘱为中心

E.以护理的服务对象为中心

题型:解答题

宁夏中南部扶贫移民的最终目标是使()万贫困人口早日摆脱贫困,与全区人民一道跨入全面小康社会。

A.35

B.65

C.100

题型:解答题

在聚丙烯装置生产过程中,使粉料中剩余的催化剂和三乙基铝等物质失活,目前普遍采用的介质是()。蒸汽

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