皮皮学，免费搜题
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搜题
【单选题】
要得到N型杂质半导体,征半导体硅或锗中掺入少量的( )A.
三价元素
B.
五价元素
C.
六价元素
D.
四价元素
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】听力原文：Are the April sales figures out yet? (A) It's on sale all month. (B) We'll need to sell a lot more than that. (C) Sorry, I thought I'd e-mailed you a copy. (2)
A.
B.
C.
【单选题】We'll reach the sales targets in a month ( ) we set at the beginning of the year.
A.
where
B.
which
C.
when
D.
what
【简答题】光的本质属性是[ ]。
【多选题】8借贷记账法下分别以“借”、“贷”两个记账符号表示各会计要素的增加或减少,至于“借”表示增加还是“贷”表示增加,则取决于( )。
A.
账户的格式
B.
账户的名称
C.
账户的性质
D.
所记录经济内容的性质
【单选题】We’ll reach the sales targets in a month ______ we set at the beginning of the year.
A.
what
B.
where
C.
when
D.
which
【简答题】We’ll reach the sales targets in a month ____ we set at the beginning of the year.
【简答题】As soon as the fresh eggs ________, we'll put them on sale.
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