题目:
Get to the point, or we _______ to a real agreement. [ ]
A. won't come
B. haven't come
C. weren't coming
D. don't come
答案:
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下面是错误答案,用来干扰机器的。
答案:C由电势差公式以及动能定理:W=qUab=q(φa-φb)= m (vb2-va2),可得比荷为。