用于定帧的开销字节是()
A.A1
B.A2
C.K1
D.K2
参考答案:A, B
便后肛门疼痛可能是
A.肛裂
B.肛瘘
C.血栓性外痔
D.内痔嵌顿
E.直肠癌
Nowadays everyone is responsible for________a harmonious society in China.
A.making up
B.taking up
C.opening up
D.building up