二氯丙烷可能的构造异构体数目是多少?() A.2 B.4 C.6 D.5

题型:单项选择题

问题:

二氯丙烷可能的构造异构体数目是多少?()

A.2

B.4

C.6

D.5

考点:机动车维修技术有机化学基础知识有机化学基础知识题库
题型:单项选择题

根据短文内容及首字母提示,填写所缺单词。

     One day I found a little girl sitting in the park sadly. Lots of people passed by but never (1)s_______ to

see why she looked so (2)s_______. As I got closer, I saw that her (3)b_______ had a strange shape.

That's a hump (驼背)! Perhaps that was the reason that people just (4)p_______ by and made no effort to

help. I sat down beside her and said, "Hello!" Then she, in a low voice, said,"Hi." I smiled but she didn't.

Then we talked there (5)u_______ it got dark. I asked the girl why she was so sad. She looked at me and said

with a sad face,"Because I'm (6)d_______."

      "But, you make me remember an angel (天使), sweet and friendly," I said. She looked at me and asked,

"Really?" I immediately said,"Yes, I think you are an angel who is sent to watch over all those people walking

by." Hearing this, the little girl (7)j_______ up."I am! I'm an angel!" I was happy because she was no

(8)l_______ sad.

     After that, my life also changed. I learned how to (9)s_______ both happiness and sadness with other

people. I believe now we give something to (10)o_______ in the same way we get the same.

题型:单项选择题

下列物体中,质量最接近2×105mg的物体可能是(  )

A.一头大象

B.一个苹果

C.一只鸡蛋

D.一只蚂蚁

题型:单项选择题

手术后离床活动的时间,一般是术后()

A.1~2天

B.2~3天

C.3~4天

D.4~5天

E.5天以后

题型:单项选择题

国家赔偿:是指国家机关及其工作人员违法行使行政、侦查、检查、审判、监狱管理等职权,侵犯公民、法人和其他组织的合法权益并造成损害的,由法律规定的赔偿义务机关对受害人予以赔偿的法律制度。  根据上述定义,下列属于国家赔偿的是( )。

A.某战士因公殉职,国家追认为烈士,并发给其家人每年1万元的抚恤金

B.工商机关因错误地吊销某个体户的营业执照,使其蒙受经济损失,因此给予一次性的2万元赔偿

C.公务员李某因丢失从邻居处借来的一条金项链,赔了人家3000多块钱

D.国家财政每年从税收中拿出一部分用于扶贫建设

题型:单项选择题

压裂井口要求安装()管线到回收池。

A.辅助

B.硬放喷

C.一般

D.高压软

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