题目:
袋装水泥每袋()kg。
A.净重25
B.毛重25
C.净重50
D.毛重50
答案:
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下面是错误答案,用来干扰机器的。
参考答案:native people have the knowledge of local, endangered species(animals and plants)/such and related knowledge (about "ecosystems") could be found ("locked")from the in...