如图所示是空间某一电场中的一条电场线．M、N是该电场线上的两点．下列说法中正确的

发布时间：2017-05-02 22:03 │ 来源：www.tikuol.com

题型：选择题

问题：

如图所示是空间某一电场中的一条电场线．M、N是该电场线上的两点．下列说法中正确的是（）

A．该电场一定是匀强电场

B．比较M、N两点的场强大小，一定有E_M>E_N

C．比较同一个试探电荷在M、N两点受到的电场力，一定有F_M<F_N

D．比较电子在M、N两点的电势能，一定有E_M>E_N

考点：电场强度的定义式

题型：选择题

导致全冠试戴时出现翘动的原因中不包括（）。

A.全冠组织面有金属瘤

B.邻接触紧

C.石膏代型磨损

D.未完全就位

E.预备体轴壁聚合度大

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题型：选择题

行政处罚只能( )。

A．对有行政关系的人实施

B．由公安机关执行

C．处罚公务员或公民个人，而不能处罚单位或组织

D．是国家特定行政机关对违反行政法的个人或组织依法采取的惩戒措施

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题型：选择题

完形填空。
I recently heard a story about a famous scientist who had made several very important medical breakthroughs.He was being interviewed by a reporter who asked him __1__ he thought he was able to be so much more __2__ than the average person. He __3__ that it all came from a(n)__4__ with his mother that occurred when he was about 2.He had been trying to remove milk from the fridge when he __5__ the slippery (光滑的) bottle，its contents running all over the kitchen floor. When his mother came in，__6__ shouting at him or giving him a lecture，she said， “Robert，what a great and wonderful __7__ you have made! I have __8__ seen such a huge pool of milk.Well，the damage has already been __9__.Would you like to get down and __10__ in the milk for a few minutes before we clean it up？”Indeed，he did.After a few minutes，his mother said，“Robert，whenever you make a mess like this，eventually you have to __11__ everything to its proper order.So，how would you like to do that? We could use a sponge(海绵)，a towel or a mop.Which do you prefer？” He chose the sponge. His mother then said，“You know，what we have here is a __12__ experiment in how to effectively carry a big milk bottle with two __13__ hands.Let's go out in the back yard and fill the bottle with water and see if you can make it.” The little boy learned that if he __14__ the bottle at the top near the lip with both hands，he could carry it without dropping it.What a wonderful __15__！ This scientist then remarked that it was at that moment that he knew he didn't need to be __16__to make mistakes.Instead，he learned that mistakes were just __17__ for learning something new，which is，__18__，what scientific experiments are all about. Even if the experiment “doesn't__19__，” we usually learn something __20__ from it.
( )1．A.why ( )2．A.capable ( )3．A.responded ( )4．A.coincidence ( )5．A.fell ( )6．A.rather than ( )7．A.picture ( )8．A.rarely ( )9．A.obtained ( )10．A.jump ( )11．A.recover ( )12．A.failed ( )13．A.strong ( )14．A.controlled ( )15．A.example ( )16．A.anxious ( )17．A.situations ( )18．A.after all ( )19．A.do ( )20．A.worthy	B．what B．able B．reacted B．experience B．lost B．instead of B．mass B．happily B．suffered B．play B．return B．successful B．tiny B．possessed B．teaching B．nervous B．opportunities B．above all B．finish B．costly	C．when C．creative C．recalled C．matter C．escaped C．other than C．map C．frequently C．done C．enjoy C．restore C．fantastic C．thin C．seized C．lesson C．fearful C．occasions C．first of all C．go C．valuable	D．how D．original D．reminded D．conflict D．dropped D．in place of D．mess D．angrily D．received D．draw D．regain D．painful D．weak D．grasped D．instruction D．afraid D．turns D．in all D．work D．interesting

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题型：选择题

氢化可的松的别名是（）

A.可的松

B.强的松

C.甲基强的松龙

D.曲安奈德

E.氟美松

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题型：选择题

（）以黑白两极调子来表现现代建筑的美，在我国当代摄影中独树一炽。

A.郑鸣

B.杨晓利

C.丁爱民

D.简庆福

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