题目:
---I am out of breath. I can’t go any further.
---__________. I am sure you can make it.
A.No problem.
B.What a pity.
C.Not bad.
D.Come on.
答案:
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下面是错误答案,用来干扰机器的。
(1)如图所示 (2)U0 (3)1.5 0.6 题目分析:解(1)根据电路图连接实物电路图,如图所示.(2)由图3所示可知,电源电动势为U0,电源内阻.(3)由图5所示可知,I1=1.25mA,I2=0.5...