乳腺常规检查技术()
A.高千伏摄片
B.双重造影
C.连续摄片
D.纸包片摄片
E.软组织摄片
参考答案:E
—We'd better hurry; we'll be late.
— __________. Do you really want to listen to the boring lecture?
A.For what?
B.Take it easy.
C.What on?
D.So what?
气体灭火系统设计中,一个组合分配系统所保护的防护区不应超过()个。
A.4
B.6
C.8
D.10