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【简答题】
型号为2AP9的半导体器件代表的是 型 材料普通二极 管;2CZ12C代表的是 N型硅 材料 二极管。
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举一反三
【单选题】My little son has not learned how to ______ the time yet.
A.
see
B.
know
C.
understand
D.
tell
【简答题】“ My son has a kid now, so I don’t have to worry about anything, ” he said with s________ .
【单选题】My son _____ the school for about two weeks. And now he is more lovely. [ ]
A.
has gone to
B.
has been to
C.
has been in
D.
has gone in
【多选题】U8中存货跌价准备功能的操作步骤有( )。
A.
存货跌价准备设置
B.
启用前企业已计提的跌价准备余额
C.
定期对存货清查，对存货成本不可收回的部分，进行存货跌价准备的计提
D.
提的存货跌价进行制单
【单选题】—My son seldom has _______ breakfast. —It is _______ unhealthy lifestyle. You must ask him to change it.
A.
/; an
B.
the; an
C.
the; a,
D.
/; a
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