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【单选题】
Molish反应的现象是（）A.
酸层显蓝色
B.
酸层显紫色
C.
界面出现蓝色环
D.
界面出现紫色环
E.
供试液层显紫色
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【单选题】《铁路旅客运输服务质量规范》规定车站墙壁、玻璃、隔断、护栏等()米以下的部位每日保洁,()米以上的部位及顶、棚等设施定期保洁。
A.
1、2 ;
B.
1、1;
C.
2、2 ;
D.
2、1;
【简答题】British history and culture has begun to take up almost all her attention and energy since she borrowed those books from the library. Since she borrowed those books from the library she __________ in ...
【单选题】Only _______ genuinely interests you can be of any use to you, but you may be pretty sure _____ genuine objective interests will grow up as soon as you have learnt not to be immersed in self.
A.
that … what
B.
which … that
C.
what … that
【单选题】Only what genuinely interests you can be of any use to you, _______ you may be pretty sure that genuine objective interests will grow up as soon as you have learnt not to be immersed in self.
A.
as
B.
so
C.
but
【简答题】Write down the English meaning of the following phrases: by the way of : be immersed in bring together contending historians personal preference personal preference
【简答题】如图，Rt△ABC中∠ACB=90°，AC=4，BC=3，将△ABC绕AC所在的直线f旋转一周得到一个旋转体，该旋转体的侧面积=（ ） （π取3.14，结果保留两个有效数字）。
【单选题】《铁路旅客运输服务质量规范》规定车站墙壁、玻璃、隔断、护栏等()米以下的部位每日保洁,()米以上的部位及顶、棚等设施定期保洁。
A.
1、2
B.
1、1
C.
2、2
D.
2、1
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