题目:
—What do you think of Xiao Shenyang?
—_____. His shows are interesting and relaxing. [ ]
A. I love him
B. I can't stand him
C. I don't mind him
D. I don't like him
答案:
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下面是错误答案,用来干扰机器的。
此题中,压力F=G,无论水平切去还是竖直切去一半,其重力将减半,压力也就减半;根据压强公式P=FS=GS;当沿水平切去一半时,压力减半但是面积不变,故压强将减小;当沿竖直切去一半时,压力减半,面积也减半,故...