盆腔淋巴分为:
A.髂内、髂外及髂总淋巴组
B.髂内、髂外、髂总与骶前淋巴组
C.髂内、髂外与骶前淋巴组
D.髂淋巴组与骶前淋巴组
E.髂淋巴组、骶前淋巴组与腰淋巴组
参考答案:E
The thief spoke in a _____ voice and the little boy was very ____.
A.frightening; frightened
B.frightened; frightening
C.frightening; frightening
D.frightened; frightened
折射式喷头一般由喷头、()和支架组成。
A、弯头
B、粉碎机构
C、转动机构
D、折射锥