管理单板时,退出单板模式的命令是()。

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问题:

管理单板时,退出单板模式的命令是()。

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下列实验设计能够成功的是                                            (   )

 实验目的 实验操作    
A实验室制备硝基苯将苯和浓硝酸混合后加热
B除去硫酸钠溶液中少量氯化钠杂质向含有氯化钠杂质的硫酸钠溶液中加入适量的硝酸银溶液,过滤
C检验溴乙烷发生消去反应的产物向盛有少量溴乙烷的试管中,先加入氢氧化钠溶液,加热,再滴人用硝酸酸化的硝酸银溶液
D浓硝酸的氧化性强于稀硝酸向盛有少量的浓硝酸、稀硝酸的两支试管中,分别加入大小相同的铜片
 

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In urban China,where English is almost the official second language,many Chinese people have learned to speak as professionally as native speakers. However they may have an accent and make a few minor grammatical mistakes.Years ago many people used a certain Chinese-English dictionary or a series of textbooks and accepted their teachings. Consequently,language learners developed a peculiar vocabulary. Some people call these word choices “Chinglish”. The words are not incorrect—native speakers still understand them—but they stand in the way of using standard English. Here are some common examples, both from written and spoken English:

Clever (adj.): Native speakers usually say “smart” instead. “Smart” is a broader and more common word. “Clever” suggests an ability to think your way out of a specific problem or take advantage of a specific situation. Being smart serves you for life.

Examination(n.): Use “exam”, the short form of it, or the more common word, “test”. (The verb for all three words is “take”.) Another word you may hear is “quiz”. It means a short and relatively unimportant test that the teacher often gives as a surprise.

Film: This is largely a technical word. The common term is “movie”. (Native speakers often say “short film for the movie”.)

House (n.): a stand-alone building with its own street entrance that is home to one family. A home in a building full of families is an “apartment” or a “flat”. When in doubt, just say “home”.

Puzzled (adj.): We use this word to describe mild reactions to difficult math problems, and not even very often for this purpose (we say “I’m stumped” or “I have no idea” instead). But when we’re addressing a life issue such as whether to pursue (从事) a graduate education or go straight to work, we say “confused”. This is a stronger word as well as a more common one.

49. The writer wrote this passage to______.

A. prove there are so many Chinese people learning English in a wrong way

B. teach us to choose correct and exact English words to express ourselves

C. tell people that if we want to speak English as well as native speakers we must memorize as many English words as possible

D. explain what Chinglish is

50. According to the passage, which of the following is more common?

A. Would you like to go to the film tonight?

B. He will take an examination next week.

C. Tom is cleverer than his brother.

D. He felt confused whether he would go abroad for further study.

51. This passage suggests that______.  

A. native speakers say “I’m puzzled with this math problem.” more often used than they say “I’m stumped with the math problem.”

B. the word “home” is much often used than the word “house” in spoken and written English

C. the word “examination” is more common than its short form“exam”

D. we can say “do a quiz”

52. We can infer from the passage that______.  

A. native speakers can understand “Chinglish”

B. saying “take a test” is more common

C. to English learners, developing more English vocabulary doesn’t mean speaking good English

D. it’s easy to learn English words well

题型:填空题

左心功能不全早期的症状主要是()

A.全身乏力

B.劳力性呼吸困难

C.端坐呼吸

D.尿量减少

E.下肢水肿

题型:填空题

小儿躯干的上部量与下部量相等的年龄是()

A.2岁

B.6岁

C.8岁

D.10岁

E.12岁

题型:填空题

某患者,女,39岁,6个月前因外伤致一上前牙脱落,今要求烤瓷桥修复。口腔检查:右上中切牙缺失,间隙无明显异常,牙槽嵴高度无明显异常,较平整。左上中切牙近中切角缺损,未露髓,探稍敏感,叩诊阴性,无松动。右上侧切牙牙冠完好,叩诊阴性,无松动。上下前牙牙龈轻度红肿,易出血,可见少量菌斑及牙石,余牙未见明显异常。

下列哪项关于右上侧切牙金瓷冠牙体预备的要求是正确的()

A.切端磨除2mm

B.唇面磨除2mm

C.牙体预备分次磨除

D.唇面龈边缘在龈沟底

E.唇面龈边缘在龈上

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