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【单选题】
甲硝唑的临床应用不包括 ( )。A.
抗需氧菌
B.
抗厌氧菌
C.
抗阿米巴原虫
D.
抗阴道滴虫
E.
抗第鞭毛虫
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【简答题】把鼠标放在两个列标中间,鼠标出现+形状时,可以改变()。
【简答题】阅读理解。 We talked to 300 people. One hundred were from 11 to 18 years old. One hundred were from 19 to 26. One hundred were from 27 to 35 years old. We asked them what they like to do on weekends. Pleas...
【单选题】下列关于我们常用元素周期表的说法中正确的是（ ）
A.
元素周期表有8个主族
B.
ⅠA族的元素全部是金属元素
C.
短周期就是指第一、二周期
D.
元素在周期表中的周期数取决于电子层数
【简答题】Eight students in our school are from countryside. A hundreds B hundred C hundreds of D hundred of
【单选题】Scientists have found that inserting genes from a plant virus into the genes of a plant susceptible to that virus increases the plant s resistance to the virus. Because viral diseases account for a si...
A.
In areas where two successive crops are raised per year, protecting the first crop from a virus will generally protect the second crop from that virus as well.
B.
By repeatedly attacking plants that are genetically altered to become virus-resistant, the virus often becomes less lethal to plants that are not genetically altered in that way.
C.
Plants that are genetically altered to become virus-resistant often pass virus-resistant genes on to their offspring.
D.
Plants that arc made genetically resistant to one kind of virus often acquire resistance to related viral strains as well.
E.
Plants that are made genetically resistant to one kind of virus are then more susceptible to infection by unrelated viruses.
【单选题】某病人,女性,72岁。诊断:慢性心力衰竭,为该病人进行静脉输液治疗时,输液速度宜控制在
A.
5~10滴/分
B.
20~30滴/分
C.
40~50滴/分
D.
40~60滴/分
E.
50~60滴/分
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