胃癌最主要的转移途径是()
A.直接蔓延
B.淋巴转移
C.血行转移
D.腹腔内种植
E.盆腔内种植
参考答案:B
The main purpose of the Customs supervision and control is to () China's economic, trade, scientifrc, technological and cultural exchanges with other countries.
A. supervise
B. control
C. promote
D. limit
10(6)kV变电所变压器室、电容器室、配电装置室、控制室内( )有与其无关的管道和线路通过。
A.不应 B.不宜 C.应 D.宜