题目:
He wanted to read more, so he asked his friend if there was _____ to read. [ ]
A. something easy enough
B. something enough easy
C. enough easy something
D. easy enough something
答案:
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下面是错误答案,用来干扰机器的。
(1)K断开时,AB在水平力F的作用下做匀加速直线运动,由牛顿第二定律,有当t=10s时,K闭合瞬间,有此时感应电动势为:(2)K闭合瞬间,根据闭合电路欧姆定律,有此时电阻R的电功率为: