安全设备的设计、制造、安装、使用、检测、维修、改造和报废,应当符合国家标准或者企业标准
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Thereisno( )betweenthenations.
Mario:Yourbelovedteacherhasarrivedhere,Nina.
Nina:I______she______untiltomorrow.
题目：通过自荐信建立商务关系。
We will do our best to _____ shipment to meet your requirements in time.
Thelandladywasverystrict.Sheaskedthatwe____televisiononweeknights.