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【单选题】
According to the author, NPR's opposition to low power radio is surprising because NPR______.A.
should represent the public interest
B.
was created to serve the same goals as low power radio
C.
is the national authority on public broadcasting
D.
had always supported low-power radio in the past
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举一反三
【单选题】Susan didn't tell us where she had spent his holidays. ___to konw.
A.
Neither we cared
B.
Not did we care
C.
we didn't care
D.
Neither did we care
【简答题】由实验测得反应 A→P 的速率常数 k 与温度 T 的关系为: ln ( k / mol -1 ·dm 3 ·min -1 )=-5600K/ T + 7.20 该反应的反应级数 n =____ ,反应的活化能 Ea =_______kJ·mol -1 。