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【单选题】
下列化合物中,自旋量子数不为零的核是( ) 。A.
16 O 8
B.
12 C 6
C.
32 S 16
D.
19 F 9
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反馈参考答案：
举一反三
【单选题】When Alice came to, she did not know how long she ____ there.
A.
had been lying
B.
has been lying
C.
was lying
D.
has lain
【简答题】施工进度计划的表现形式主要有 和 两种。
【单选题】When Alice came to, she did not know how long she ( )there.
A.
has been lying
B.
was lying
C.
has lain
D.
had been lying
参考解析：
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