新旧信息系统的转换方式不包括_____。
A.直接转换
B.逐个模块转换
C.并行转换
D.分段转换
参考答案:B
Standing on top of the building, ______.
A.the whole city could be seen
B.nothing could be seen
C.we could see the whole city
D.all could be seen
某地区建有一火力发电厂,该地区环境保护部门欲对该项目投产后对其下风侧大气环境的影响作出评价。经测量,该工厂烟囱高度为170m,烟波轴线离地面高度为220m,那么该工厂的评价区半径为
A.4250~5100mB.5100~6800mC.6600~8800mD.5100~6600mE.6800~8800m