【单选题】【消耗次数：1】
在同一电子层中，由电子的能量差别，分为（ ）。
①
电子云
②
电子层
③
电子亚层
④
界面
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相关题目
【多选题】
电子云中的小黑点（）
①
A.表示电子在该处出现
②
B.其疏密表示电子出现的概率大小
③
C.表示电子的波函数
④
D.其疏密表示电子出现的概率密度大小
⑤
E.表示电子的实际数目
随机题目
【单选题】
Not only the society but also the people in it ______.
①
has changed
②
have changed
③
have been changed
④
has been changed
【单选题】
She ___________ in delight upon hearing the news.
①
claimed
②
exclaimed
③
whispered
④
murmured
【单选题】
Lets pull ___________ the parking lot and have a rest.
①
about
②
into
③
out of
④
around
【单选题】
Their ____ that their project under way was something entirely new proved to be untrue.
①
belief
②
assumption
③
faith
④
suggestion
【单选题】
Prof. Lee took ___________ the chairmanship of the committee.
①
about
②
at
③
over
④
down
【单选题】
The Government will ___________ its control over economic growth.
①
make
②
do
③
tighten
④
need
【单选题】
I asked the secretary if there were ______ tickets but she had only the expensive ______.
①
one, ones
②
any, one
③
some, ones
④
any, ones
【单选题】
______ David loves his daughters, he is strict with them.
①
When
②
If
③
Since
④
While