【简答题】Se io ( ) [essere] il direttore, ti darei due giorni di riposo.
【单选题】下列关于鼠标和键盘接口的描述中,正确的是( )
A.
目前主机连接键盘的接口有串行接口、PS/2接口和USB接口三种
B.
PS/2接口是鼠标和键盘的专用接口,其形状为圆形5孔
C.
很多主板中颜色为绿色的PS/2接口为鼠标接口,紫色的为键盘接口,可以相互混用
【单选题】在下面PC机使用的外设接口中,可用于将键盘、鼠标、数码相机、扫描仪和外接硬盘与PC机相连的是______。
【单选题】在下面PC机使用的外设接口中,哪一种可用于将键盘、鼠标、数码相机、扫描仪和外接硬盘与PC机相连?( )
【单选题】Due to unforeseen difficulties, we find it impossible to make shipment in July, and would appreciate ________ the shipment date and validity of your L/C to May 31 and June 15 _______ .
A.
you to extend…respectively
B.
you to extend…respective
C.
your extending…respectively
D.
your extending…respective
【简答题】变频器主要由整流器、中间直流环节、逆变器和___________组成。
【单选题】It is essential that we draft a ______ plan in case there are unforeseen problems with the organization of the event.