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
