肝颈回流征阳性见于（）
A.右心室肥厚
B.肺气肿
C.右心衰竭
D.肝硬化
E.左心衰竭
参考答案：C
下列哪一项不属于保护保险公司的条款( )。
A．自杀条款
B．延迟条款
C．除外和风险限制条款
D．续保条款
The accuracy of scientific observation and calculations is always at the mercy of the scientist's timekeeping methods.
A．under the control of
B．within the kindness of
C．beyond the reach of
D．out of the control of
