【单选题】某电磁炉上标有“ 220V 、 2kW ”字样,其中 220V 是指电压的 ( ) 。
【多选题】数控机床的哪些技术指标在很大程度上取决于伺服系统的性能。
【单选题】What is the difference between Western and Chinese customs at funerals?
A.
People in China make no noise at all at funerals.
B.
Chinese tend to show little feelings at funerals.
C.
Westerns tend to walk very close to the bereaved.
D.
In Western countries, a solemn quiet always prevails.
【简答题】机床的加工精度和使用寿命在很大程度上取决于机床导轨的质量,目前数控机床使用较多的是____导轨和____导轨,也有采用____导轨的。
【简答题】At funerals, Chinese pay respect to the dead and express their sorrow by wearing white and writing elegiac couplets in_____________.
【判断题】“三位一体综合合作”体系的优势是为农民提供的服务从生产到生活、从摇篮到天堂,并且各项业务相互支撑。
【判断题】At funerals,Chinese pay respect to the dead and express their sorrow by wearing white.
【判断题】数控机床的加工精度,在很大程度上取决于数控机床位置检测装置的精度。
【判断题】数控机床加工精度,在很大程度上取决于数控机床位置检测装置的精度。( )