牙体由哪几部分构成（） A.牙釉质 B.牙本质 C.牙骨质 D.牙髓 E.牙周膜

发布时间：2017-05-08 04:52 │ 来源：www.tikuol.com

题型：多项选择题

问题：

牙体由哪几部分构成（）

A.牙釉质

B.牙本质

C.牙骨质

D.牙髓

E.牙周膜

考点：放射医学(医学高级)X线 X线题库

题型：多项选择题

完形填空。
     Qian Lei is a student of Class Two, Grade Seven. He is twelve yours old. He often wastes (浪费)
  1    at home and at school. The teacher    2     about him and asks his father to talk with him.
     One evening,    3    supper his father asks him, " How do you like the vegetables and the meat?" "Oh,
they are just so-so. They    4    delicious."
     "They are delicious, I think." Says the father. "When I am at the age of yours, I go to school    5
every day. It is ten kilometers from my home to the school. I have    6    bike, no pencil-box. I can't eat
water-ice or ice-cream. There aren't TV sets, fridges, washing machines    7    any  other electric things
in my home. After school I have to do a lot of housework    8    my parents. When your grandparents
are at the age of yours, they can't go to    9    because they are very poor. They have only a little food
and they have to do a lot of hard work. There is no light, telephone or radio in their home."
     "Don't they have a telephone or a radio?" says the boy. "Why don't they   10    some money from the
bank (银行) to buy the living things (生活用品)? I don't believe (相信) you. How do they live? "
     The father doesn't say anything.

( )1. A. water
( )2. A. knows
( )3. A. after
( )4. A. don't
( )5. A. by bike
( )6. A. some
( )7. A. or
( )8. A. to help
( )9. A. factory
( )10. A. bring

B. food
B. thinks
B. for
B. can't
B. by plane
B. any
B. and
B. help
B. farm
B. take

C. time
C. talks
C. with
C. aren't
C. on foot
C. many
C. but
C. helping
C. school
C. carry

D. times
D. worries
D. on
D. isn't
D. by car
D. no
D. then
D. helps
D. shop
D. buy

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《中华人民共和国消防法》规定，对国务院公安部门规定的大型的人员密集场所和其他特殊建设工程以外的按照国家建设工程消防技术标准需要进行消防设计的其他建设工程，建设单位应当自依法取得施工许可之日起（）个工作日内，将消防设计文件报公安机关消防机构备案。

A．五

B．六

C．七

D．八

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物联网是将各种感知技术、现代网络技术和（）聚合与集成应用。

A.数码技术

B.信息技术

C.人工智能技术

D.传感技术

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2006年某日，王某等人在叶某的饭店内吃饭后未付钱。数天后，王某等人路过叶某的饭店时，叶某便向其催讨，王某认为有损其声誉，当晚便纠集郑某等人到该店滋事，并以言语威胁，要叶某请客了事，叶某不从，王某即从郑某处取过东洋刀往叶某左臂及头部各砍一刀。此时，叶某拔出事先自备的尖刀还击，在店门口刺中王某胸部一刀后，冲出门外侧身将王某抱住，两人互相扭打砍刺。在旁的郑某见状即拿起旁边的一张方凳砸向叶某的头部，叶某转身还击一刀刺中郑某胸部后，又继续与王某扭打，将王某压在地上并夺下王某手中的东洋刀。王某和郑某经送医院抢救无效死亡，叶某也多处受伤。则叶某的行为：( )。

A．不构成犯罪，属于正当防卫

B．构成故意伤害致人死亡罪，但属于防卫过当

C．构成故意伤害致人死亡罪，不属于防卫过当

D．构成故意杀人罪，不属于防卫过当

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化验室常用的两碱是（）。

A.氢氧化钡

B.氢氧化钠

C.氢氧化钾

D.小苏打

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