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【单选题】
进行时S N 1应, 速率最快的是:( )A.
3-溴-2-甲基丁烷
B.
2-溴-2-甲基丁烷
C.
1-溴-2-甲基丁烷
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【简答题】The old man decided all his money to the poor people after his death.
【多选题】关于在混凝土中掺入减水剂所起的作用，正确的是（）。
A.
若不减少拌合用水量，能显著提高拌合物的流动性
B.
当减水而不减少水泥时，可提高混凝土强度
C.
若减水的同时适当减少水泥用量，则可节约水泥
D.
混凝土的耐久性得到显著改善
E.
混凝土的安全性得到显著提高
【单选题】Almost a century after his death, the well-known French author Jules Verne has once again managed to fire the imagination of people around the world, this time with an unpublished novel, Paris in the ...
A.
He thinks it is a comedy.
B.
This 19th-century vision of the future describes life among skyscrapers of glass and steel, high-speed trains, gas-powered automobiles, calculators, fax machines and a global communications network.
C.
It describes the life of an unidealistic young man who struggles to find happiness in the fiercely materialistic dystopia that Paris has become by 1920.
D.
He thinks the Jules Verne has once again managed to fire the imagination of people around the world and it is a grim and troubling comment on the human costs of technological progress.
【单选题】Almost a century after his death, the well-known French author Jules Verne has once again managed to fire the imagination of people around the world, this time with an unpublished novel, Paris in the ...
A.
He thinks it is a comedy.
B.
This 19th-century vision of the future describes life among skyscrapers of glass and steel, high-speed trains, gas-powered automobiles, calculators, fax machines and a global communications network.
C.
It describes the life of an unidealistic young man who struggles to find happiness in the fiercely materialistic dystopia that Paris has become by 1920.
D.
He thinks the Jules Verne has once again managed to fire the imagination of people around the world and it is a grim and troubling comment on the human costs of technological progress.
【单选题】混凝土中加入减水剂的同时，若不减少拌合用水量，以下说法正确的是（ ）。
A.
能提高拌合物的流动性
B.
能提高混凝土的强度
C.
能节约水泥
D.
能调节混凝土的凝结速度
【简答题】西装独特的着装标准有哪些?
【简答题】After his death the house was back to its ____(origin) owner.
【单选题】His will arranged for the disposal of his property after his death.
A.
他在遗嘱中安排了自己死后的财产处理问题。
B.
他死后将按遗嘱处理他的财产。
C.
他的愿望是死后再处理财产的问题。
【单选题】混凝士中加入减水剂的同时，若不减少拌合用水量，以下说法正确的是（ ）。
A.
能提高拌合物的流动性
B.
能提高混凝土的强度
C.
能节约水泥
D.
能调节混凝土的凝结速度
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