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【单选题】
叠 加定理是对电流和 ( ) 的叠加,对 ( ) 不能进行叠加。
A.
电阻,电流
B.
电阻,电压
C.
功率,电压
D.
电压,功率
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【简答题】已知数列 为等比数列,且 ,设等差数列 的前 项和为 ,若 ,则
【单选题】Which of the following cases contains an element that may lead a politician to correct cognitive dissonance? ( )
A.
A politician does not really care if the spotted owl lives or becomes extinct.
B.
The politician has the power to pass legislation to keep the spotted owl from extinction.
C.
The politician will get re-elected for ignoring the needs of the spotted owl.
D.
The politician grew up in the city.
【单选题】细长轴工件图样上的键槽画法用()剖视表示。
A.
B.
C.
移出
D.
【单选题】以下哪种情况适宜做全瓷覆盖
A.
深覆(牙合),覆盖小
B.
覆(牙合)、覆盖正常
C.
牙合力较大的前牙
D.
以上都不对
【单选题】以下哪种情况适宜做全瓷覆盖
A.
深覆(牙合),覆盖小
B.
覆(牙合)、覆盖正常
C.
(牙合)力较大的前牙
D.
固定桥的固位体
E.
以上都不对
【简答题】A.skilled B.mental C.manual D.mechanical
【多选题】Choose the following sentences if you think that "serve" has the same meaning as "satisfying".
A.
But the study shows that principal among them is the work of library staff to serve the information needs of the communities.
B.
This could mean the closure of thousands of small businesses which serve the community.
C.
Almost no politician in the US runs for office without begging  huge campaign funds from the rich – so when they are elected, they must serve their interests, not ordinary Americans’.
D.
Leo is currently serving a life sentence for murder.
【简答题】已知数列 为等比数列,且 ,设等差数列 的前 项和为 ,若 ,则 .
【单选题】以下哪种情况适宜做全瓷覆盖
A.
深覆,覆盖小
B.
覆、覆盖正常
C.
力较大的前牙
D.
固定桥的同位体
E.
以上都不对
【简答题】设等差数列 的前 项和为 ,若 ,则 .
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