【判断题】纬重平组织上机时,为保证织物中经纱相互平行,布面平整,应尽量使相同运动规律的经纱穿入不同的筘齿。
【判断题】服务贸易不存在关税问题,但却存在着非关税壁垒。
【单选题】计算机网络是指把不同地理位置的计算机通过通信线路和( )连接在一起,实现计算机之间的通信和资源共享。
【单选题】听力原文: The first step in writing is to get over the guilt of not writing. You don' t 'owe” anybody a letter. Letters are a gift. The burning shame you feel when you see unanswered mail makes it harder ...
A.
You consider that you owe somebody a letter.
B.
You consider that letters are gifts.
C.
You consider that writing letters makes you feel cheerful.
D.
You should feel shamed that you haven' t answered a letter.
【多选题】计算机网络是指把不同地理位置的计算机通过( )连接在一起,实现计算机之间的通信和资源共享。