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.

(72)是()

A.belt

B.ribbon

C.tape

D.band

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
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文体小学有女生450人,男生360人 一共有多少人?已经有700名同学加入了少先队,还有多少人没加入?

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操作"患者仰卧位,患侧下肢屈髋,屈膝,健侧下肢伸直。治疗者上方手放在膝关节上,下方手托住小腿,双手同时将大腿向腹侧摆动"属于()。

A.屈曲摆动髋关节

B.旋转摆动髋关节

C.长轴牵引膝关节

D.内收内旋摆动髋关节

E.外展外旋摆动髋关节

题型:单项选择题

化合物A是一种不稳定的物质,它的分子组成可用OxFy表示。10mL A可分解生成15mL O2和10mL F2(同 温同压下)。

(1)A分解反应的化学方程式为:_______________。

(2)已知A中x个氧原子呈…O-O-O…链状排列,则A分子结构式的是__________。

(3)该分子中O发生了____杂化,形成了______个_______(填空间位置的关系)的杂化轨道,O原子与其他原子间形成______键(填“σ”或“π”)。其中∠OOO(键角)_______180°(填“是”、“不是”或“不能确定”)。

(4)Se和Br分别与O、F同主族,则Se原子的电子排布式为__________,Br原子的简化电子排布式为________。

题型:单项选择题

患者缺失多年,要求做义齿修复。检查:余牙牙冠形态正常,无松动。患者适合做哪种修复?()

A.固定义齿

B.可摘局部义齿

C.覆盖义齿

D.总义齿

E.即刻义齿

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润滑油的检测项目之外观(色度)?

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