根据《紫外线杀菌灯》(GB19258-2003)中紫外线辐射照度的测定步骤,不正确的

题型:单项选择题 A1/A2型题

问题:

根据《紫外线杀菌灯》(GB19258-2003)中紫外线辐射照度的测定步骤,不正确的做法是()

A.将受试灯管固定在光轨上,按灯的特性点燃,灯的中部的水平法线通过紫外线辐射照度计探头的中心

B.将紫外线辐射照度计安装在光轨上,使照度计的接受平面的法线与被测灯管中部的水平法线相重合

C.调节紫外线辐射照度计的位置,使紫外线辐射照度计的接受表面距被测灯管表面的距离为800mm

D.接通受试灯管的电源使灯正常燃点,并预热20分钟

E.待灯稳定后,打开紫外线辐射照度计的快门,直接读取紫外线辐射照度计的读数

考点:消毒技术(主管技师)基础知识综合练习基础知识综合练习题库
题型:单项选择题 A1/A2型题

运用词语联想法时,调研人员必须留意被调查者回答联想的时间长短,如果立即回答,表示他的态度()

A.强度高

B.强度适中

C.强度低

D.无法判断

题型:单项选择题 A1/A2型题

下列鱼类制品中属于干制品的是()

A.风鳗

B.鱼子

C.鱼翅

D.咸鲐鱼

题型:单项选择题 A1/A2型题

液压试验法符合零件的(),检测准确、可靠,适用于有密封要求的零件,广泛用于制造和修理工作中。

A.工作条件

B.设计要求

C.制造条件

D.性能要求

题型:单项选择题 A1/A2型题

钛及钛合金管焊接应采用( )进行焊接。

A.二氧化碳气体保护焊

B.惰性气体保护焊

C.氧-乙炔焊

D.真空焊

题型:单项选择题 A1/A2型题

For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never ending flood of words. In (1) a job or advancing in one, the ability to read and comprehend (2) can mean the difference between success and failure. Yet the unfortunate fact is that most of us are (3) readers. Most of us develop poor reading (4) at an early age, and never get over them. The main deficiency (5) in the actual stuff of language itself—words. Taken individually, words have (6) meaning until they are strung together into phrases, sentences and paragraphs. (7) , however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often regressing to (8) words or passages. Regression, the tendency to look back over (9) you have just read, is a common bad habit in reading. Another habit which (10) down the speed of reading is vocalization—sounding each word either orally or mentally as (11) reads.

To overcome these bad habits, some reading clinics use a device called an (12) , which moves a bar(or curtain) down the page at a predetermined speed. The bar is set at a slightly faster rate (13) the reader finds comfortable, in order to "stretch" him. The accelerator forces the reader to read fast, (14) word by word reading, regression and subvocalization practically impossible. At first (15) is sacrificed for speed. But when you learn to read ideas and concepts, you will not only read faster, (16) your comprehension will improve. Many people have found (17) reading skill drastically improved after some training. (18) Charlie Au, a business manager, for instance. His reading rate was a reasonably good 172 words a minute(19) the training; now it is an excellent 1,378 words a minute. He is delighted that how he can (20) a lot more reading material in a short period of time.

 

第(7)空应选择()

A.Fortunately

B.In fact

C.Logically

D.Unfortunately

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