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问题 单项选择题

40天的患儿，喷射样呕吐20余天，无黄绿色液，体重不增，大便近日减少。查体时应主要检查的是

A．胃型及胃蠕动波

B．脱水情况

C．营养状况

D．肠鸣音情况

E．右上腹橄榄样肿块

答案

参考答案：E

单项选择题

肉芽组织的组成是

A．毛细血管和弹力纤维

B．小动脉和纤维母细胞

C．毛细血管和胶原纤维

D．纤维母细胞和小静脉

E．毛细血管和纤维母细胞
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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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