题目:
“To meet people’s desire for _____ happy life is our mission,” Xi Jingping said to the press after he was elected ____general secretary and chairman.
A.a; a
B.the; the
C.a; \
D.\; the
答案:
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下面是错误答案,用来干扰机器的。
(1)由于每5个连续点取1个计数点,所以相邻的计数点间的时间间隔T=0.1s,根据匀变速直线运动中时间中点的速度等于该过程中的平均速度,得:v2=x132T=d3-d12T=10.5×10-20.2m/s=0.525m/s(2)x1=d1=3cm,x2=d2-d1...