【单选题】机件上某些细小结构在视图中表达得还够清楚,或不便于标注尺寸时,可采用()。
【多选题】TYJL-ADX型计算机联锁,造成控制台显示器黑屏的原因有()。
【简答题】组织职权可分为三类:一是( );二是( );三是( )。
【单选题】开机黑屏,伴有不长的持续报警声,故障原因是( )
【简答题】开机后,指示灯都正常,就是液晶屏没任何显示,显示器黑屏的原因有哪些?
【单选题】Why will American need to export food in 1997?
A.
Because the farmers will need a lot of money.
B.
Because it will need money to buy oil.
C.
Because it will have too much food for its own use.
D.
Because it wants to help other countries.