肝性脑病的发病机制是
A．氨中毒B．假神经递质C．氨硫醇和短链脂肪酸的协同毒性作用D．氨基酸代谢不平衡E．上述多种因素综合作用所致
参考答案：E
（10内江14）下列物质属于纯净物的是
A．液化空气
B．石油
C．蒸馏水
D．碘酒
The carrier is entitled to carry the goods on deck only if such carriage is in accordance（）an agreement with the shipper or with the usage of the particular trade or is required by statutory rules or regulations.
A.to
B.in
C.on
D.with
