下列四种电器中,利用电流热效应工作的是:[ ]
A.洗衣机
B.录音机
C.电视机
D.电饭锅
答案:D
She was the first woman ______ to the board.
A.to be appointed
B.having been appointed
C.appointing
D.to appoint
克罗恩病最常见的病变部位是()
A.状结肠
B.空肠
C.回肠末端
D.十二指肠空肠交界处
E.十二指肠