点M在圆(x-5)2+(y-3)2=9上,则M点到直线3x+4y-2=0的最短距

题型:选择题

问题:

点M在圆(x-5)2+(y-3)2=9上,则M点到直线3x+4y-2=0的最短距离为(  )

A.9

B.8

C.5

D.2

考点:点到直线的距离直线与圆的位置关系
题型:选择题

已知数列{an}为等差数列,a3=5,a7=13,数列{bn}的前n项和为Sn,且有Sn=2bn-1,

(1)求{an},{bn}的通项公式.

(2)若cn=anbn,{cn}的前n项和为Tn,求Tn.

题型:选择题

阅读理解。

     A young man went to a town and worked there. He did not have a wife and a servant did the

work in his house.

     The young man liked laughing a lot. He nailed the servant's shoes to the floor on Monday, and

then laughed, because he put his feet in them and fell down.

     The servant was not angry, but smiled. Then the young man put brushes in his bed on Tuesday.

The servant got into bed and hit the brushes with his feet. He was afraid. The young man laughed

loudly again. Again the servant was not angry, but smiled.

     Then on Wednesday the young man said to his servant, "You're a nice, kind man. I am not going

to be unkind to you again."

     The servant smiled and said, "And I'm not going to put any more mud from the street in your coffee."

1. The young man went to a town ___.

A. to study

B. to work

C. to see his relative

D. to spend his holiday

2. He played a joke on the servant because ___.

A. he hated him

B. he was not satisfied with the food the servant prepared for him

C. he wanted to get pleasure

D. he liked to show off himself

3. When the young man played a joke on him, the servant was not angry but smiled because ___.

A. he liked the young man' s action

B. making the young man laugh is his job

C. he was afraid to be fired

D. he thought he shouldn't be angry with a child

4. What did the servant do in return to the young man?

A. He stole something from the house.

B. He gave a smile to the young man.

C. He had a fight with him.

D. He put mud into the young man's coffee.

5. Why did the young man stop playing jokes on the servant?

A. Because the servant showed kind and nice behaviour to him

B. Because the servant told him the truth

C. Because he wanted to be a good man

D. Because his father told him to do so

题型:选择题

广州白鹳塑料制品有限公司与台湾锦云贸易有限公司签订印花塑料餐具加工合同,由锦云公司向白鹳公司免费提供ABS树脂一批,并支付加工费,成品由锦云公司在境外销售。白鹳公司为此向海关申领了加工贸易手册。在加工过程中,由于没有印花设备,白鹳公司报经主管海关同意后,将半成品交深圳丽姿胶印有限公司印花后运回。在合同执行过程中产生的800kg边角料作内销处理,合同执行完毕,白鹳公司向主管海关报核。
根据上述材料,回答下列问题:

关于该加工贸易合同的备案,下列表述正确的是( )。

A.白鹳公司到本企业所在地海关备案

B.丽姿公司到本企业所在地海关备案

C.丽姿公司到白鹳公司所在地海关备案

D.白鹳公司到丽姿公司所在地海关备案

题型:选择题

五叶芦根汤用于下列何证()

A.湿温后期,余湿未尽证

B.风温后期,肺胃阴伤证

C.春温后期,邪留阴分证

D.暑湿后期,肺胃气液两虚证

E.湿温后期,湿胜阳微证

题型:选择题

建筑施工变化大、规则性差、项目内容多。如每栋建筑物从基础、主体()。

A.装修

B.采购

C.物资设备

D.户外工程

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