【简答题】莫斯科是__ 首都, 也是俄罗斯政治、经济、金融、 科学、艺术中心。(填写汉字)
【判断题】为使飞轮不过于笨重,飞轮最好安装在低速轴上。()
【单选题】What is the man' s opinion of the language laboratory?
A.
It needs to have more French lesson tapes.
B.
It needs to have its controls repaired.
C.
It is different from all the other laboratories.
D.
It can be operated rather easily.
【单选题】______was the weather ______ yesterday? [ ]
【判断题】止回阀安装时,使介质流动方向与阀体箭头方向相反。
【判断题】工件从定位到夹紧的全过程,称为安装,使工件定位和夹紧的装置称为夹具。