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【判断题】
晶体二极管作稳压管应用时,主要利用其反向击穿特性。( )A.
正确
B.
错误
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举一反三
【单选题】Nobody knows _____. [ ]
A.
who lives in that house
B.
what did he say
C.
where does she want to go
【简答题】Nobody knows where she lives, ______?
【简答题】Nobody knows where she lives, _______________ ?
【单选题】案例摘要：防腐剂在药物制剂中是一个重要的添加剂，不同制剂对防腐剂有不同要求。下列哪种防腐剂对大肠杆菌的抑菌活性最强（）
A.
山梨酸
B.
羟苯酯类
C.
苯甲酸
D.
醋酸洗必泰
E.
苯扎氯铵
【单选题】The lives of beetles are divided into four stages, as are thos e of wasps, ants and butterflies.
A.
lives
B.
stages
C.
insects
【单选题】听力原文：M: May I speak to Tim Smith, please? W: Nobody by that name lives here. What do we learn from the conversation?
A.
Tim Smith isn't at home right now.
B.
The caller dialed the wrong number.
C.
Tim Smith can't come to the phone right now.
【单选题】Nobody knows ______ the old man lives. So it is hard to find him.
A.
when
B.
where
C.
which
D.
how
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