搜题请搜索小程序“爱下问搜题”
问题 多项选择题

下列哪些活动，应当由取得有关行政主管部门许可的单位进行？（）

A.大型游乐设施的安装；

B.起重机械、客运索道维修；

C.电梯的安装、改造、维修；

D.压力容器改造。

答案

参考答案：A, B, C, D

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
单项选择题

服用抗角化药维A酸时（）

A．忌饮酒

B．宜多饮水

C．忌喝茶

D．禁吸烟

E．宜多食脂肪餐
查看答案