口腔颌面外科手术止血方法中，最基本、最常用的方法是
A．压迫止血
B．阻断止血
C．热凝止血
D．降压止血
E．钳夹、结扎止血
参考答案：E
Could you tell me _______ the radio without any help? [ ]
A. how did he mend
B. what did he mend
C. what he mended
D. how he mended
