患者,男性,63岁,左下第一磨牙磨耗重,现出现自发痛,拟行根管治疗,根管治疗的步骤为

题型:单项选择题

问题:

患者,男性,63岁,左下第一磨牙磨耗重,现出现自发痛,拟行根管治疗,根管治疗的步骤为()

A.根管预备和充填

B.根管预备、根管消毒和根管充填

C.根管清理、根管消毒和根管充填

D.机械预备、根管消毒和根管充填

E.根管清理、根管预备和根管充填

考点:广西口腔住院医师规范化培训牙体牙髓病学牙体牙髓病学题库
题型:单项选择题

阅读理解。

     A mother and her young son got into a bus in a small city and sat down. The bus conductor came to them

for their money. The mother said, "I want one ticket to Oxford," and gave her a shilling (先令).

     The conductor looked at the small boy for a few seconds and then said to him,"How old are you, young

man?"

     The mother began speaking, but the conductor stopped her, and the boy said, "I'm four years old at home,

and two and a half in buses and trains."

     The mother took six pence (便士) out of her bag and gave the money to the conductor. The conductor

gave her one and a half tickets.

1. One day the mother took a bus _____.

A. to a small city

B. to get some money

C. with her son

2. The mother gave the conductor _____ pence in all (总共) that day.

A. 12

B. 16

C. 18

3. The mother was _____.

A. honest

B. not honest (诚实)

C. very clever

4. The conductor asked _____ how old he was.

A. the little boy

B. the mother

C. the bus driver

5. The boy was _____ years old then.

A. two

B. four

C. two and a half

题型:单项选择题

It is reported that two schools,       are being built in my hometown, will open next year.    [ ]

A. they both      

B. which both    

C. both of them    

D.both of which

题型:单项选择题

电视频道专业化

题型:单项选择题

少油断路器具有()等优点。

A.价格低

B.金属耗材量小

C.没有引起火灾与爆炸的危险

D.不需调试

题型:单项选择题

在GIS出厂见证的机械特性试验项目中,如果采用液压操作机构,还应同时在()下进行。

A.最小功能液压

B.额定操作液压

C.闭锁压力

D.厂家规定压力

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