Ink-jet printer belongs to nonimpact print

题型:单项选择题

问题:

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

考点:计算机软件水平考试中级软件设计师中级软件设计师上午试题
题型:单项选择题

新生儿败血症最常见的感染途径是()

A.宫内感染

B.脐部、皮肤感染

C.呼吸道感染

D.产道感染

E.泌 * * 感染

题型:单项选择题

腰椎间盘突出症的手术指征是()

A.有明显的神经压迫症状者

B.严格非手术治疗6个月以上效果不显著者

C.多次反复发作者

D.有急性腰扭伤史

E.马尾神经受压

题型:单项选择题

国检有哪些“一票否决”指标?

题型:单项选择题

钢管扣件式脚手架的每块脚手板的重量不宜大于()。

A、10kg

B、30kg

C、60kg

D、90kg

题型:单项选择题

背景


某桥为主跨30m的预应力混凝土空心板梁,跨越河流。采用预制吊装,后张法施工。预制场设置在工地附近的空地上,基岩裸露。
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问题

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张拉使用的千斤顶、油压表、油泵、锚夹具必须符合设计要求,并配套标定或(①),以准确标定(②)的关系曲线。按设计要求(③),张拉时千斤顶的作用线必须与(④)重合。张拉采用(⑤)控制,以(⑥)作为校核,同时控制(⑦)。
①(1)定期检查 (2)定期校验 (3)定期配套校验 (4)不定期校验
②(1)张拉力与钢束伸长量 (2)张拉力与压力表读数 (3)张拉力与锚夹具 (4)压力表与钢束伸长量
③(1)一段分批张拉 (2)两端张拉 (3)两端对称张拉 (4)两端同时对称张拉
④(1)管道轴线 (2)锚具轴线 (3)预应力轴线 (4)千斤顶轴线
⑤(1)应力 (2)伸长量 (3)夹片伸缩量 (4)千斤顶活塞伸缩量
⑥(1)应力 (2)伸长量 (3)夹片伸缩量 (4)千斤顶活塞伸缩量
⑦(1)夹片伸缩量 (2)千斤顶活塞伸缩量 (3)钢束断丝、滑丝数 (4)锚具变形量
A.(1) B.(2) C.(3) D.(4)

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