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问题 单项选择题

设计概算是设计单位编制和确定的建设工程项目从立项至（）所需全部建设费用的文件。

A.交付使用

B.办理完竣工决算

C.项目报废

D.施工保修期满

答案

参考答案：A

解析：设计概算是由设计单位根据初步设计或扩大初步设计文件等，按照设计要求概略地计算拟建设工程项目从立项开始到交付使用为止所需全部建设费用（建设投资）的文件。

填空题

若正比例函数y=kx与y=2x的图象关于y轴对称，则k=______．
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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.

（71）处填（）。

A．Hot

B．Warm

C．Heat

D．Thermal
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