试题与答案

龈上洁治术前应先含漱,最好用()。 A.新洁尔灭 B.蒸馏水 C.清水 D.高锰酸钾

题型:单项选择题

题目:

龈上洁治术前应先含漱,最好用()。

A.新洁尔灭

B.蒸馏水

C.清水

D.高锰酸钾液

E.3%双氧水

答案:

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参考答案:A

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     The first weeks were a bit hard.Loneliness wasn't the problem-I was in constant contact with clients by
email and phone.But I did feel claustrophobic (患幽闭恐怖症的).With wheels on my desk chair and
the refrigerator just two feet away,I could work for twelve straight hours without ever standing up.There
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     At the same time,I discovered that working this way had definite advantages.Not only did I save an
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B.she worked long hours
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