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【单选题】
下列各组量子数中不合理的是（）A.
n = 2 ， l = 1 ， m = 0
B.
n = 3 ， l = 2 ， m = 1
C.
n = 2 ， l = 0 ， m = 1
D.
n = 3 ， l = 2 ， m = 2
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举一反三
【单选题】If the measures had been available, the doctors and patients ______ from SARS.
A.
could not have died
B.
should not have died
C.
wouldn't have died
D.
would not die
【单选题】在下列说法中,哪些是正确的? (1) 可逆热力学过程一定是准静态过程 (2) 准静态过程一定是可逆过程 (3) 不可逆过程就是不能向相反方向进行的过程 (4) 凡是有摩擦的过程,一定是不可逆过程
A.
(1) 、 (2) 、 (3)
B.
(1) 、 (2) 、 (4)
C.
(2) 、 (4)
D.
(1)、(4)
【单选题】The little boy was in er. The doctors and nurses are doing him.
A.
what they can do help
B.
everything they can help
C.
what they can to help
D.
all what to help
【单选题】The patient’s erous condition ____the doctors and nurses many a sleepless night.
A.
cost
B.
spent
C.
paid
D.
made
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