大型玻璃钢储罐封头制作时，毡、布铺层应交替进行，不允许漏铺，

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问题填空题

大型玻璃钢储罐封头制作时，毡、布铺层应交替进行，不允许漏铺，布与布之间、毡与毡之间（）长度为30-50mm。

答案

参考答案：搭接

单项选择题

Which of the following is least likely to be classified as an opportunity cost()

A. The cash savings related to adopting a new production process.

B. The cash flows generated by an old machine that is to be replaced.

C. The market value of vacant land to be used for a distribution center.

填空题

光栅电子海图RCDS不可以（）。