皮皮学，免费搜题
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搜题
【单选题】
电路如图所示,当 R 1 = R 2= R 3 时,则输出电压 u o 为 ( ) 。A.
-（ui1-ui2）
B.
ui2-ui1
C.
-（ui2+ui1）
D.
ui2+ui1
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知识点：
皮皮学刷刷变学霸
举一反三
【多选题】在开题报告中，科研结果的预期目标。
A.
是根据目前的经验，预测研究结果可能的情况
B.
大多数时候应该是根据已经掌握的知识的合理外推
C.
应该对应课题所确定的研究范围
D.
是对自己的实验结果可能性的随意猜测
【多选题】在开题报告中,科研结果的预期目标是?
A.
大多数时候应该是根据已经掌握的知识的合理外推
B.
应该对应课题所确定的研究范围
C.
是根据目前的经验，预测研究结果可能的情况
D.
是对自己的实验结果可能性的随意猜测
【单选题】What did the doctor do first with the lady?
A.
He took her temperature.
B.
He listened to her lungs and heart.
C.
He examined her throat.
【单选题】What did the old lady do when she was a kid!
A.
She climbed trees and spent her days outdoors.
B.
She wore her hair in a ponytail.
C.
She put on her lipstick and talked on the phone constantly.
D.
She quarreled with her parents frequently.
【简答题】What did the hot dog vendor do with the coins the old lady gave him?
【简答题】What did the doctor do first with the lady? [A] He listened to her lungs and heart. [B] He took her temperature. [C] He examined her throat.
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