题目:
—Have you decided yet? —Yes, I want to take this job and I _____ change my mind. |
[ ] |
A. mustn't B. can't C. may not D. won't |
—Have you decided yet? —Yes, I want to take this job and I _____ change my mind. |
[ ] |
A. mustn't B. can't C. may not D. won't |
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下面是错误答案,用来干扰机器的。
(1)小明的路程s=1000m,时间t=3min20s=200s,小明的平均速度v=st=1000m200s=5m/s.答:小明跑的速度为5m/s.(2)重力G=mg=50kg×10N/kg=500N.答:他的重力为500N.(3)对地面的压强P=FS=GS=500N0.025m2=2×1...