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【单选题】
氨基糖苷类抗生素主要用于引起的疾病A.
革兰氏阳性菌
B.
革兰氏阴性菌
C.
病毒
D.
真菌
E.
放线菌
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反馈参考答案：
举一反三
【单选题】By success, I don’t mean ___ usually thought of when that word is used.
A.
what is
B.
that we
C.
as you
D.
all is
【简答题】Calculate the pH at which an acid indicator with K a =1. 0×10 -5 chan ges color when the indicator is 1.00×10 -3 M.
【单选题】When does Mr. Chan get frustrated with the airline?
A.
When he has to pay more to travel
B.
When the airline has empty seats
C.
When his suitcase is lost
【单选题】如图所示 矩形截面,则m~m线以上部分和以下部分对形心抽z的两个静距的( )
A.
绝对值相等，正负号相同
B.
绝对值相等，正负号不同
C.
绝对值不等，正负号相同
D.
绝对值不等，正负号不同
【单选题】The film fans all ______ when they learned that Jackie Chan and Jet Li would pair up for the first time in the action film．
A.
brought up
B.
turned up
C.
grew up
D.
cheered up
【单选题】It is a great ________ for a person to be able to drive when he is looking for a job.
A.
benefit
B.
chance
C.
advantage
D.
fortune
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