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【简答题】
采用直拉法进行硅单晶生长时,往往将一定数量的杂质加入多晶硅熔融液中,以获得所需的掺杂浓度,但杂质浓度在单晶棒的纵向和径向均可能存在不均匀性。试简述其产生的主要原因。
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举一反三
【单选题】Which of the following sentences best explains “To think I trusted you!”?
A.
I never trusted you.
B.
I think I can trust you.
C.
I thought you trusted me.
D.
I was wrong to have trusted you.
【简答题】饭店人力资源管理(名词解释)
【简答题】饭店人力资源管理
【单选题】I was (so interested in) the video that I (watched) it (for) two hours before I (realized) it.
A.
so interested
B.
watched
C.
for
D.
realized
【单选题】I was (so interested in) the video that I (watched) it (for) two hours before I (realized) it.
A.
so interested in
B.
watched
C.
for
D.
realized
【简答题】饭店人力资源管理
【单选题】The video explains in simple terms how the new tax works.
A.
a quality that makes sb/sth attractive or interesting
B.
a series of musical notes that are sung or played in a particular order
C.
a word or phrase used as the name of sth
D.
no choice
【简答题】饭店人力资源管理
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