问题
单项选择题
The rescue coordination center may（）on stations which interfere with traffic.
A.keep silence
B.forbid transmission
C.change information
D.impose
答案
参考答案：D
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The rescue coordination center may（）on stations which interfere with traffic.
A.keep silence
B.forbid transmission
C.change information
D.impose
参考答案：D
）分子中含有______个
键，____个
键，其中C原子的杂化方式为_______。
所示，则氮化铂的化学式为_______。