为避免()和数据丢失,可编程序控制器装有锂电池,当锂电池电压降降至相应的信号灯亮时,

题型:单项选择题

问题:

为避免()和数据丢失,可编程序控制器装有锂电池,当锂电池电压降降至相应的信号灯亮时,要及时更换电池。

A、地址

B、指令

C、程序

D、序号

考点:维修电工高级维修电工高级维修电工理论知识试卷(四)
题型:单项选择题

毒毛皮炎()

A.做好检疫隔离、疫情预报、疫源地消毒、预防接种和个人防护

B.防霉和防尘,加强个人防护和定期健康监护

C.诱蛾、捉虫、杀虫,作业时注意个人防护

D.治疗钩虫病患者,粪便封存无害化使用,穿鞋袜、长裤作业

E.结合施肥消灭椎实螺,粪便无害化处理和个人防护(涂5%松香凡士林软膏)

题型:单项选择题

一个小正方形的边长是2厘米,它的周长是______厘米.用4个这样的小正方形拼成大正方形,大正方形的周长是______厘米.

题型:单项选择题

董仲书散文的艺术特点是什么?

题型:单项选择题

坚毅个性具有调节压力的功能,捍卫压力带來的身心变动,以下特征何者不属于坚毅性格?()

A.控制

B.挑战

C.爽朗

D.承诺

题型:单项选择题

A child watching television experiences a procession of sights and sounds that flash from the screen just long enough for the eyes and ears to take them in. Unlike the pages of a book, which can be read as slowly or as quickly as the child wishes, television images appear with a relentless velocity that stunts rather than. enhances the child’s powers of imagination.
The view expressed above is based on an assumption. Of the following, which can best serve as that assumption

A.When allowed to choose a form of entertainment, children will prefer reading to watching television.

B.A child’s imagination cannot be properly stimulated unless the child has access both to television and to books.

C.A child’s imagination can develop more fully when the child is able to control the pace of its entertainment.

D.Children should be taught to read as soon as they are able to understand what they see on television.

E.(E) A child’s reaction to different forms of sensory stimuli cannot be predicted, since every child is different.

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