肝癌病人已发生转移，其最早、最常见的转移方式是（）
A.肝外血行转移
B.肝内血行转移
C.淋巴转移
D.种植转移
E.直接蔓延
参考答案：B
An inland oil barge must have equipment available to remove an on-deck oil spill of at least（）.
A.one barrel
B.two barrels
C.five barrels
D.ten barrels
