门静脉高压症时受影响最早的侧支血管为
A．脐静脉
B．胃冠状静脉
C．直肠上静脉
D．腹膜后静脉
E．腹壁上静脉
参考答案：B
巴塞尔协议基于()两点建立。
A.资本与存款比率
B.资本与总资产比率
C.资本的规定
D.资本与风险资产的联系
________ of my sisters are experts in agriculture. Helping the farmers improve their
farming techniques _________their duty.
A．Each; are
B．Both; is
C．Neither; are
D．None; is
