25 ℃时，0.1 mol·L-1的盐酸中，水的离子积为（） A．1×10-13

关于腰麻的适应证，下列哪项是对的（）

A.2～3小时以内的下腹部、盆腔、下肢和肛门会阴部手术

B.剖腹探查术

C.脊柱外伤

D.脊柱结核

E.髋关节成形术

___ you were born?

A．Was it where that

B．It was where that

C．Where was it that

D．Where it was that

粗甲苯(按重量计纯度在95%以下)

— I heard the phone ringing in the office next door.

— You ________ it. They haven't got a phone yet. [      ]

A. couldn't have head      

B. couldn't hear

C. wouldn't have heard        

D. didn't hear

在行颅脑超声检查时，能较完整的显示大脑中动脉、大脑前动脉、后交通动脉及大脑后动脉的检查窗是（）。

A.颞窗

B.枕窗

C.眼窗

D.额窗

E.顶窗