【判断题】简单地说,“纵向一体化”就是要求企业尽量将有限的资源集中到自己的核心业务上来。( )
【判断题】网上的商店可以接到顾客订单后,再向制造的厂家订货,而无须将商品陈列出来以供顾客选择,只需在网页上打出货物菜单以供选择。
【单选题】能以 简单 扩散的方式进出细胞的 物质是
【单选题】The symbol depicts a ( ) .
B.
Fixed displacement pump
C.
Variable displacement pump
【单选题】粗纤维包括纤维素、部分半纤维素和木质素以及()。
【判断题】画图时,为了作图简便,一般将变形系数简化这样在画正等轴测图时,凡是平行于投影轴的线段,就可以直接按立体上相应的线段实际长度作轴测图,而不需要换算。
【单选题】___________ 查看材料
A.
The city trying to stop the spread of graffiti, has painted over some of the murals complete.
B.
This striking work depicts two people facing each other on opposite sides of the freeway near downtown Los Angeles.
C.
Artists like murals because they like the work of Mexican artitsts.
D.
Now the city is beginning a huge project to restore the city's murals.
E.
The mural represents the history of ethnic proups in California.
F.
Soon their murals became a symbol of the city's cultural expressions and a showcase for LA's cultural diversity.
【单选题】This symbol depicts a hydraulic component that is used for