【单选题】The author's purpose in writing the passage is ______.
A.
to give advice on appropriate conduct for social occasions
B.
to provide ways of how to obtain information about people
C.
to call the reader's attention to the negative side of people's characters
D.
to discuss the various aspects of getting to know people
【判断题】塑件调湿处理不仅隔绝空气,防止氧化,还可以消除内应力。
【判断题】所谓基孔制,就是基本偏差为一定的孔的公差带与不同基本偏差的轴的公差带形成的各种配合的一种制度。
【判断题】基轴制是基本偏差为一定的孔的公差带与不同基本偏差的轴的公差带形成各种性质配合的一种制度
【简答题】Direc tions: In this section you will hear a recorded short passage. The passage is printed on the test paper, but with some words or phrases missing. The passage will be read three times. The first r...
【单选题】基孔制配合是基本偏差为一定的孔的公差带与不同基本偏差的轴的公差带形成各种配合的一种制度。标准规定孔的下偏差作为基本偏差,代号为( ),数值为零。
【多选题】按照网络的覆盖范围对计算机网络可以分成()