搜题请搜索小程序“爱下问搜题”
问题 单项选择题

1958年北戴河中央政治局扩大会议上，主要讨论了1959年的国民经济计划，中心议题是（）。

A.当年的钢铁生产和粮食生产

B.当年的钢铁生产和建立农民公社

C.当年的经济增长指标和粮食生产

D.当年的经济增长指标和建立农民公社

答案

参考答案：B

解答题

三位数乘三位数的积一定是六位数．______．（判断对错）
查看答案
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
查看答案