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问题 单项选择题

133-135男性，60岁，粘连性肠梗阻5天，出现呼吸深快，查体：面部潮红，心率110次/分,血压90/60mmHGg,腱反射减弱,化验:血PH 7.20.血浆HCO3—15 mmol/L

A．呼吸性酸中毒

B．代谢性酸中毒

C．呼吸性件中毒

D．代谢性碱中毒

E．呼吸性酸中毒合并代谢性酸中毒

答案

参考答案：B

单项选择题

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet. Heterogeneous network environments consist of computer systems from (66) vendors that run (67) operating systems and communication protocols. An organization that (68) its computer resources is usually (69) the task of integrating its heterogeneous systems. Typically, each deparlment or division has defined its own network needs (70) OS, LAN topology, communication protocols,applications, and other components.

A．in general

B．in any term

C．in set terms

D．in terms of
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单项选择题

埋弧焊机调试时空载调整时正常，但按“焊接”按钮后小车不动作，可能有故障是（）。

A.继电器或接触器

B.电位器或继电器

C.电位器或接触器

D.仅是电位器
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