【判断题】The beauty of portable apps is that you can carry your software and your data on removable storage, such as a hard drive, and plug it into any computer.
【单选题】对于 A、B两个词项,如果所有a都是b,并且所有b都是a,那么A、B两词项具有( )。
【判断题】Portable software is so simple to install that it is sometimes referred to as install-free software.
【判断题】三相半波可控整流电路中,如果三个晶闸管采用同一组触发装置,则α的移相范围只有90o
【多选题】根据林业废弃物的统计方法,下列可用于能源用途的林木剩余物有()
【判断题】True/False: The advantage of portable software is that you never have to install it on your computer.
【单选题】With portable software, ____.
A.
programs do not exist on the hard disk
B.
no configuration data is stored on the hard disk
C.
no entries need to be made in the Windows Registry
【单选题】对于a、b两个词项,如果所有a是b,有b不是a,那么a、b两个词项具有( )。