肠结核最好发的部位是
A.直肠、乙状结肠
B.降结肠
C.横结肠
D.升结肠
E.回盲部
参考答案:E
The conference has been held to discuss the effects of tourism________the wildlife in the area.[ ]
A.in
B.on
C.at
D.with
下列属于加速折旧法的有______
A.直线法
B.双倍余额递减法
C.年数总和法
D.工作量法
E.偿债基金法