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问题 单项选择题

患者，男性，66岁。因胃溃疡住院，既往有慢性心力衰竭病史，输液治疗过程中患者突然出现呼吸困难、气促、咳嗽、咳粉红色泡沫样痰。

患者发生的情况是（）

A.急性肺水肿

B.空气栓塞

C.肺气肿

D.支气管哮喘

E.药物过敏反应

答案

参考答案：A

单项选择题

Ink-jet printer belongs to nonimpact printers in which the characters are formed by projecting particles or droplets of ink on to paper. (71) printer is also a n0nimpact printer in which the characters are produced by applying hot elements to heat-sensitive paper directly or by melting ink from a (72) on to plain paper. Electrostatic printer creates an electrostatic latent image, which is then made visible by a toner and transferred and fixed on paper. An electrostatic printer may be used in some instances as a (73) . Laser printer creates, by means of a laser beam directed on a (74) surface, a latent image which is then made visible by a toner and transferred and fixed on paper. Magnetographic printer creates, by means of magnetic heads operating on a metallic drum, a latent image which is then made visible by a toner and transferred and fixed on paper. Computer-output-microfilm (COM) printer produces on a photographic film a (75) of each page.

（73）处填（）。

A．drawer

B．painter

C．plotter

D．brush
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单项选择题

下列关于花坛表面装饰抹灰的施工表述错误的是（）。

A、底层和中层砂浆宜采用1：2水泥砂浆

B、底层和中层总厚度控制在12mm

C、面层采用水泥：石屑=1：1.25的体积比

D、隔24天洒水养护
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