350×6，积的末尾只有一个0．______．
350×6=2100；
答：积的末尾有两个0．
故答案为：错误．
由于发包人或监理工程师指令承包人加快施工速度，缩短工期，监理工程师应批准承包人的( )索赔。
A．费用B．工期C．工期和费用D．工期、成本和利润
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