可能产生职业病危害的建设单位应在()阶段向卫生行政部门提交职业病危害预评价报告书。
A.设计
B.可行性论证
C.竣工验收
D.施工阶段
参考答案:B
“在先进的国家,革命引起观念;在落后的国家,观念引起革命”,罗素的这一观点在中国近代开始出现在( )
A.鸦片战争后
B.辛亥革命后
C.新文化运动
D.五四运动后
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 nonimpact 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.
(74)处填()。
A.brightness
B.photosensitive
C.emitter
D.light-sensitive