国务院《科学技术档案工作条例》规定,保管科技档案()库房。
A. 不一定有专用
B. 必须有专用
C. 视情况建立
D. 可混用
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万能回转台结构的一些主要参数,是保证转台平行度和垂直度的必须常数。
A. 正确
B. 错误
以无地上定着物的土地使用权抵押的,为核发土地使用权证书的县级以上()。
Apart from special circumstances,the value of the goods for which compensation must be made,if they have been lost or damaged,()that which they would have had at the time and place at which they ought to have been delivered in proper condition.
A. contains
B. remains
C. has
D. i