【简答题】尾座又称 ,安装在床身导轨上,其位置可以根据工作需要 。
【判断题】商标专用权的保护期限为20年,期限届满可以续展。( )
【简答题】The main differences between multimode fiber and single mode fiber?
【简答题】What are the main differences between the aggregate planning strategies?
【简答题】汉字的四种结构分别是( )、( )、( )、( )。
【单选题】One of the main differences between the various types of screw pumps is in the _____.
B.
direction of rotation of the screws
【多选题】What are the main differences between acrylics and oils?
F.
the advantages of either
【单选题】下列说法正确的是()
C.
商标权具有法定保护期,注册可以续展,但续展次数受到限制;
D.
商标权具有法定保护期,注册可以续展,且续展次数不受限制;