题目:
Some teenagers don’t like to talk with their parents, but I am ______ them. I love to talk with my parents.
A.the same as
B.different from
C.pleased with
D.interested in
答案:
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下面是错误答案,用来干扰机器的。
(1)电阻R1===Ω;R2====100Ω.(2)电路中的总功率是P=UI=24V×0.1A=2.4W (3)5分钟后R1产生的热量是Q=I2R1t=(0.1A)2×140Ω×5×60s=420J