干电池是一种常用、方便的电源.以下关于干电池的说法中不正确的是( ) A.干电池

题型:选择题

问题:

干电池是一种常用、方便的电源.以下关于干电池的说法中不正确的是(  )

A.干电池是最常用的直流电源

B.常用的1号、5号、7号新干电池的电压都是1.5V

C.干电池是把电能转化为化学能的装置

D.多数干电池中含有重金属元素,随便丢弃会污染环境.所以,废弃的干电池应该集中分类处理

考点:电源(干电池、蓄电池)及其能量转化
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The fridge is considered a necessity. It has been so since the 1960s when packaged food first appeared with the label: "store in the refrigerator. "
In my fridgeless fifties childhood, I was fed well and healthy. The milkman came daily, the grocer, the butcher, the baker, and the ice cream man delivered two or three times a week. The Sunday meat would last until Wednesday and surplus bread and milk became all kinds of cakes. Nothing was wasted, and we were never troubled by rotten food. Thirty years on, food deliveries have ceased, fresh vegetables are almost unobtainable in the country.
The invention of the fridge contributed comparatively little to the art of food preservation. A vast way of well tried techniques already existed—natural cooling, drying, smoking, salting, sugaring, bottling…
What refrigeration did promote was marketing—marketing hardware and electricity, marketing soft drinks, marketing dead bodies of animals around the globe in search of a good price.
Consequently, most of the world’s fridges are to be found, not in the tropics where they might prove useful, but in the wealthy countries with mild temperatures where they are climatically almost unnecessary. Every winter, millions of fridges hum away continuously, and at vast expense, busily maintaining an artificially cooled space inside an artificially heated house—while outside, nature provides the desired temperature free of charge.
The fridge’s effect upon the environment has been evident, while its contribution to human happiness has been insignificant. If you don’t believe me, try it yourself, invest in a food cabinet and turn off your fridge next winter. You may miss the hamburgers, but at least you’ll get rid of that terrible hum.

The statement "In my fridgeless fifties childhood, I was fed well and healthy. " (Line 1, Para. 2) suggests that ______.

A.the author was well fed and healthy even without a fridge in his fifties
B.the author was not accustomed to using fridges even in his fifties
C.there was no fridge in the author’s home in the 1950s
D.the fridge was in its early stage of development in the 1950s

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把下列句子中画线的熟语,换成一个意义相当的四字格成语。

A.凡遇院中公文,送府用印,孙大夫动辄横挑鼻子竖挑眼,当即剥回。

B.“豪强”和“官家”,历来一个鼻孔出气,狼狈为 * * 。

C.人一介书生,而且无家室之累,打开天窗说亮话,又有何妨?

D.况且列强虎视眈眈,吃着碗里看着锅里,正是蚕食鲸吞的时候。

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下列关于建设工程施工专业分包合同的订立,说法正确的是( )。

A.专业分包合同的当事人是业主和分包人

B.专业分包合同的当事人是承包人和分包人

C.专业分包合同文件的组成中包括除总包合同价款之外的总承包合同文件

D.分包人有权充分了解其在分包合同中应履行的义务

E.专业分包合同文件的组成中包括总承包合同文件的所有文件

题型:选择题

患者女性,55岁,近3个月来出现胸骨后疼痛,伴有反酸、胃灼热、嗳气,症状常于进食后或平卧时加重,1周来疼痛症状加重。

如果上述检查正常,则初步临床诊断为

A.食管癌

B.反流性食管炎

C.慢性浅表性胃炎

D.慢性萎缩性胃炎

E.胃癌

题型:选择题

加氢精制装置停动力蒸汽后,下列设备不需要停运的是()

A、新氢机

B、反应进料泵

C、反应加热炉

D、分馏循环泵

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