安慶石化出售的三種品牌的化肥袋上分別標(biāo)有質(zhì)量為(40±0.1)kg、(40±0.2)kg、(40±0.3)kg的字樣，從中任意取出兩袋，它們的質(zhì)量最多相差

[　　]

A．

0.8 kg

B．

0.6 kg

C．

0.5 kg

D．

0.4 kg

答案：B
解析：

從條件中可以看出，在三種化肥中，最多可以超出標(biāo)準(zhǔn)質(zhì)量0.3 kg，最低低于標(biāo)準(zhǔn)質(zhì)量0.3 kg，所以從中任意取出兩袋，它們的質(zhì)量最多相差0.6 kg，所以答案為B．


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