肝癌最常见转移部位 ( )
A.血行转移
B.淋巴转移
C.肝内
D.种植转移
参考答案:C
Among all the birthday gifts ______ a DIY card, which I like best.
A.is included
B.include
C.were included
D.including
活塞环的自紧密封在()情况下会失效。
A.侧间隙过大
B.开口间隙过大
C.侧间隙为零
D.开口间隙过小