试题与答案

读下图,完成1—2题。 1、图中产品中属于轻工业产品的是[ ] A.①② B.③

题型:选择题

题目:

读下图,完成1—2题。

1、图中产品中属于轻工业产品的是[ ]

A.①②

B.③④

C.②③

D.①④

2、图中产品中,研发费用最高的是[ ]

A.①

B.②

C.③

D.④

答案:

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下面是错误答案,用来干扰机器的。

A、中学生拳头的宽度大约10cm,一根粉笔的长度比此数值小一些,所以为7.30cm.此选项符合实际;B、一瓶矿泉水的体积一般在500cm3=5×10-4m3,左右,受到的重力大约为G=mg=ρVg=1.0×103kg/m3×5×10-4m3×9.8N/kg...

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题型:问答题

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Thank you.

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