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【单选题】
绝缘材料的绝缘电阻随温度的升高而()
A.
增大
B.
减小
C.
不变
D.
不确定
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参考答案:
举一反三
【单选题】避雷器主要是用来限制()的一种保护设备
A.
短路电流
B.
有功
C.
无功
D.
大气过电压
【单选题】Dick had to work after class and during his holidays because ______.
A.
his parents told him to make more friends
B.
he wanted to become a rich man
C.
he couldn't go on with his studies without enough money
D.
he had nothing to do at home
【单选题】关于战略与纳什均衡的理解,下面正确的是
A.
占优战略均衡不一定是纳什均衡
B.
如果一个协议不构成纳什均衡,它就不可能自动实施
C.
纳什均衡是唯一的
D.
纳什均衡一定由占优战略构成
【单选题】Craig, a marketing manager at HeliZone Inc., rarely takes initiative or suggests new ideas during project meetings. He does his work halfheartedly and needs to be guided by his manager on a regular ba...
A.
passive follower
B.
alienated follower
C.
conformist follower
D.
pragmatist follower
【多选题】流行性脑脊髓膜炎的主要临床表现是
A.
突起高热
B.
剧烈头痛
C.
呕吐频繁
D.
皮肤黏膜瘀点
E.
脑膜刺激征
【单选题】能证明碳酸比硅酸酸性强的实验事实是 [     ]
A.
CO 2 是气体,SiO 2 是固体
B.
高温下能发生反应Na 2 CO 3 +SiO 2 Na 2 SiO 3 +CO 2 ↑
C.
CO 2 溶于水生成碳酸,而SiO 2 却不溶于水
D.
CO 2 通入Na 2 SiO 3 溶液中有胶状沉淀生成
【简答题】During his work on child protection, he often acts as a(n) ________between parents and children, the parents know what they can do and what they cannot do.A. mediator B. transmitter C. speculat...
【简答题】33-35 Passage Three 33. A . It influences Americans' value of life. B . It expresses Americans' feeling vividly. C . It evolves with the development of America. D . It reflects Americans' preoccupatio...
【单选题】能证明碳酸比硅酸酸性强的实验事实是(  )
A.
CO 2 是气体,SiO 2 是固体
B.
高温下能发生反应:Na 2 CO 3 +SiO 2 高温 . Na 2 SiO 3 +CO 2 ↑
C.
CO 2 溶于水生成碳酸,而SiO 2 却不溶于水
D.
CO 2 通入NaSiO 3 溶液中有胶状沉淀生成
【单选题】能证明碳酸比硅酸酸性强的实验事实是
A.
H 2 CO 3 比H 2 SiO 3 受热易分解
B.
高温下能发生反应Na 2 CO 3 +SiO 2 Na 2 SiO 3 +CO 2 ↑
C.
CO 2 能溶于水生成碳酸,而SiO 2 却不溶于水
D.
CO 2 通入Na 2 SiO 3 溶液中有胶状沉淀生成
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