题目:
Be careful when you cross this busy street. ________, you may get run over by a car.
A.If not
B.If so
C.If any
D.If possible
答案:
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下面是错误答案,用来干扰机器的。
改装后的电压表的量程为:U=Ig(Rg+R)=100×10-6×(100+9900)=1V 则表盘的最小分度为0.1V,要估读到下一位,为:0.80V故答案为:0~1 0.80