按下图所示装置进行实验。将胶头滴管中的水滴入瓶中,a、b处水面无明显变化。则瓶中

题型:选择题

问题:

按下图所示装置进行实验。将胶头滴管中的水滴入瓶中,a、b处水面无明显变化。则瓶中固体为

[ ]

A.CaCO3

B.CaO

C.NaOH

D.NH4NO3

考点:盐的性质
题型:选择题
先通读下面的短文,掌握其大意,然后在每小题所给的四个选项中,选出可以填入空白处的最佳选项。
Seven cats are good friends. They live in the same town. They always go   1  together on Saturdays. Every time one of them finds a place to go.
Today, a   2  called Mimi should find a place, but she doesn’t give   3 calls to her friends. The other cats are angry (生气). They all go to Mimi’s house and ask her, “You give us no call.  4 ?”
Mimi hears (听到) this and begins to cry. She  5  , “I will move to a new house with my father. It is in another town. I can’t go shopping with you    6 .”
Her friends hear that and talk for a long time. Then they have an idea. “Don’t   7 . We will go to that town and do the shopping    8   your new house.”
Mimi is very happy. She jumps high.
Two days later, Mimi comes to her friends and says, “I don’t need to move. My father    9  a new job here in this town.”
Her friends are happy again. They still go shopping together on    10  .
小题1:
A.swimmingB.shoppingC.runningD.walking
小题2:
A.cat B.girl C.student D.woman
小题3:
A.some B.anyC.everyD.each
小题4:
A.Why B.HowC.WhatD.When
小题5:
A.asks B.answersC.talksD.tells
小题6:
A.alsoB.too C.again D.more
小题7:
A.runB.worryC.goD.move
小题8:
A.inB.withC.toD.near
小题9:
A.wantsB.seesC.findsD.gives
小题10:
A.Mondays B.Wednesdays C.SaturdaysD.Sundays
题型:选择题

以下关于产业组织创新的说法不正确的是( )。

A.所谓产业组织创新是指同一产业内企业的组织形态和企业间关系的创新

B.产业组织创新往往是产业及产业内企业的“被组织”过程

C.产业组织的创新不仅仅是产业内企业与企业之间垄断抑或竞争关系平衡的结果,更是企业组织创新与产业组织创新协调与互动的结果

D.产业组织的创新没有固定的模式

题型:选择题

省略3042650000亿位后面的尾数时,______位上的数比______小,可以直接舍去尾数,再添上一个亿字.

题型:选择题
把20g盐放入100g水中,盐占盐水的(  )
A.
1
5
B.
1
6
C.
5
6
题型:选择题
如图表示一交流电的电流随时间而变化的图象,此交变电流的有效值是(  )

A.5A

B.5A

C.3.5A

D.3.5A

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