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【单选题】
本征半导体的特点,电子浓度( )空穴浓度A.
等于
B.
大于
C.
小于
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【简答题】 sure that the______(茶壶嘴)of the teapot is not facing anyone.
【单选题】BP will continue to be focused on making sure that the costs ________with oil spill cleanup in the Gulf of Mexico are paid.
A.
covered
B.
filled
C.
occupied
D.
associated
【判断题】Federalism is a very important principle in making the Constitution, which aims at making sure that the national government shares certain powers with the states.
A.
正确
B.
错误
【单选题】The correct way of holding chopsticks is to hold chopsticks , making sure that the ends are even.
A.
in the middle
B.
at the end
C.
on the top
D.
as you like
【判断题】Convincing the audience of a message's benefits involves two main steps of making sure that the benefit really will occur, and explaining it to the audience.
A.
正确
B.
错误
【简答题】是点该点发光飞碟好烦人
【简答题】数据的分散程度称为数据的（ ）。
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