试题与答案

把一根长1米,底面直径2分米的圆柱形钢材截成2段,表面积增加了多少平方分米?

题型:填空题

题目:

把一根长1米,底面直径2分米的圆柱形钢材截成2段,表面积增加了多少平方分米?

答案:

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参考答案:C解析:血源性肺脓肿病原菌以金黄色葡萄球菌为主。

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