将质量为m1g的钠、铝混合物投入一定量的水中充分反应，金属没有剩余，共收集到标准

发布时间：2017-06-20 16:45 │ 来源：www.tikuol.com

题型：选择题

问题：

将质量为m₁g的钠、铝混合物投入一定量的水中充分反应，金属没有剩余，共收集到标准状况下的气体11.2L。向溶液中逐滴加入浓度为4mol·L^－¹的HCl溶液，至100mL时白色沉淀达到最大量。继续滴入HCl溶液，当加入HCl溶液体积VmL时沉淀恰好消失。将所得溶液蒸干灼烧得固体m₂g。下列关系式中不正确的是

A．V＝150 mL

B．m₁＝14.6g

C．白色沉淀最大量为15.6g

D．m₂＝10.2g

考点：氧化钠单质钠其他钠盐（氯化钠、硫化钠、氮化钠等）过氧化钠

题型：选择题

完形填空。

     How would you like to go to a school like this one in Oxford, England? There are no formal classes.
The students   1   from one group to another when they want to.  2  may find students who are fourteen,
fifteen or sixteen years old all in the same    3   . They work at their own speed.  4     tells them what they
should or shouldn't be doing.  The day I   5   , school began at nine. Some students were working    6   a
tape recorder and listening to their own voices. Others were watching a TV program   7   physics. A third
group was working in the library. I didn't see anybody just sitting doing    8   . Nobody was wasting time.   9  the students taking a break in the cafeteria were having a   10   on politics (政治).

( )1. A. move
( )2. A. You
( )3. A. grade
( )4. A. Somebody
( )5. A. visited
( )6. A. on
( )7. A. in
( )8. A. something
( )9. A. However
( )10. A. drink

B. study
B. A man
B. school
B. A teacher
B. moved
B. with
B. according to
B. much
B. Even
B. show

C. travel
C. He
C. class
C. Nobody
C. studied
C. for
C. on
C. anything
C. Also
C. debate

D. stay
D. I
D. group
D. The group leader
D. stayed
D. Through
D. by
D. nothing
D. Only
D. quarrel

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题型：选择题

方程x²=2x的解是（）。

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题型：选择题

胫骨中下1/3骨折愈合较慢的主要原因是

A．附近的主要血管损伤

B．附近的周围神经损伤

C．远骨折段完全丧失血液供应

D．两骨折段血液供应减少

E．远骨折段血液供应减少

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题型：选择题

在我国的银行体制中，中央银行是指( )。

A．中国银行
B．中国人民银行
C．中国工商银行
D．中国农业银行

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题型：选择题

小额支付系统普通业务采用（）模式，同一笔业务的录入与确认由不同柜员完成。

A.录入

B.复核

C.审批

D.录入、复核

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