脑增强CT显示"水母状"征象提示()
A.毛细血管扩张症
B.静脉性血管瘤
C.动静脉畸形
D.海绵状血管瘤
E.Sturge-Weber综合征
参考答案:B
So many natural disasters are believed___________over the recent years because of the frequent unreasonable mankind activities.
A.to have come about
B.to come about
C.coming about
D.to be coming about
拆下蓄电池电缆后,会对电控系统计算机内的哪个部件造成影响?()
A.RAM
B.ROM
C.A/D
D.EPROM