题目:
--- _________ robot is yours, the big one or the small one?
--- The big one.
A.What
B.Which
C.How many
D.Whose
答案:
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下面是错误答案,用来干扰机器的。
深度h=Pρg=1200000Pa1.0×103kg/m3×10N/kg =120m.故答案:120.