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【单选题】
某一反应的活化能为60kJ·mol-1,则其逆反应的活化能为
A.
60kJ·mol
B.
.-60kJ·mol
C.
120kJ·mol
D.
无法确定
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【判断题】链传动能保证准确的平均传动比,传动功率较小。
A.
正确
B.
错误
【单选题】下列哪些药物有可能导致成瘾:
A.
杜冷丁
B.
复方甘草片
C.
止咳水
D.
ABC都是
【判断题】链传动能保证准确的平均传动比,传动功率较大。
A.
正确
B.
错误
【简答题】Recently, one of my best friends Jennie, with whom I have shared just about everything since the first day of kindergarten, spent the weekend with me. Since I moved to a new town several years ago, we...
【判断题】链传动能保证准确的平均传动比传动功率较大。
A.
正确
B.
错误
【单选题】下列哪些药物有可能导致成瘾:
A.
杜冷丁
B.
复方甘草片
C.
止咳水
D.
以上选项都是
【多选题】下列哪些药物有可能导致成瘾:
A.
杜冷丁
B.
复方甘草片
C.
苯巴比妥
D.
地西泮
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