皮皮学，免费搜题
登录
搜题
【单选题】
对于不同系列的烃类，在相对分子质量相近的情况下，其氢碳原子比大小顺序是（）。A.
烷烃>环烷烃>芳香烃
B.
烷烃>芳香烃>环烷烃
C.
芳香烃>环烷烃>烷烃
D.
芳香烃>烷烃>环烷烃
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】You are not allowed to park you car here. If you ______ it here, I will call the police.
A.
do park
B.
park
C.
parked
D.
have parked
【单选题】You must be () if you sit here working alI day without rest.
A.
relaxing
B.
exhausting
C.
relaxed
D.
exhausted
【简答题】一弹性球竖直落在一斜面上,下落高度h=20cm,斜面对水平的倾角 ,问它第二次碰到斜面的位置距原来的下落点多远(假设小球碰斜面前后速度数值相等,碰撞时入射角等于反射角)。
【简答题】If you are staying here, you may leave your car in this place.
【简答题】A．It's better to live here. B．It will change soon. C．You'll like it if you live here for long. D．You'll soon be used to it.
【单选题】--- Do you mind if I smoke here in the living room? --- Well, if you ___. But I’d rather you didn’t.
A.
can
B.
might
C.
must
D.
needn’t
相关题目：