皮皮学，免费搜题
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【单选题】
若级数 收敛,且 ,则 必定( )A.
收敛
B.
发散
C.
可能收敛，可能发散
D.
以上都不对
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皮皮学刷刷变学霸
举一反三
【单选题】有三个反应,其活化能(kJ/mol)分别为:①320,②40,③80,当温度升高相同数值时,以上反应速率增加倍数的大小顺序是( )。
A.
①>③>②
B.
①>②>③
C.
②>③>①
D.
③>②>①
【简答题】在逻辑代数中,逻辑变量的取值只有两个:___ _ 、___ _ 。
【单选题】听音频，回答下列问题：
A.
To look for a job as a salesperson.
B.
To have a talk with Miss Thompson.
C.
To place an order for some products.
D.
To complain about a faulty appliance.
【简答题】以下可用作亲水性凝胶骨架缓释片材料的是( ) A.海藻酸钠 B.聚氧乙烯 C.脂肪 D.蜡类
【单选题】According to the conversation what is Dr. Gus purpose?
A.
To have a talk with exhibitor.
B.
To purchase a lab.
C.
To discuss the possibility of negotiation with the Universal Computers Ltd.
D.
To inquire more information about the scientific apparatus.
【简答题】A．To have a talk with him. B．To inform. him of their decision. C．To discuss a problem with him. D．To tell him a problem they met with.
【简答题】A．To have a talk with him. B．To discuss a problem with him. C．To inform. him their decision. D．To tell him a problem.
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