【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】Which of the following statement about software is NOT true?
D.
Software is logical entity.
【单选题】在气缸直径与最高气体爆炸压力一定的条件下,采用十字头式柴油机的最大优点是()。
【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
【单选题】生产工艺过程所产生的职业性有害因素按性质可分为:( )
【单选题】The beauty of portable apps is that you can carry your software and your data on removable storage, such as a ____, and plug it into any computer.
【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()
【多选题】生产工艺过程常常随着生产设备.使用的原料和生产工艺的变化而变化,其所产生的职业性有害因素按性质可划分为( )。
【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