抢救呼吸衰竭患者，使用呼吸机不当可出现()A．加重心力衰竭 B．加重二氧化碳潴留 C

Evidence has been piled up ______ drinking water after getting up in the morning contributes to one’s health.

A．what

B．which

C．if

D．that

在以上药品品种中，用于戒毒的药品是（）

A．升汞 

B．水银 

C．闹羊花 

D．美沙酮 

E．洋金花

会计职业道德与会计法律制度一样，都是由国家强制力来保障实施的。（）

地图学的学科重点转移有哪些方向？

Communication protocols are (66) connection-oriented or connectionless, (67) whether the sender of a message needs to contact and maintain a dialog with the recipient or (68) send a message without any, prior connect and with the hope that the recipient receives everything. (69) .These methods (70) the two ways that communication is implemented on networks.

A．not

B．neither

C．either

D．all