工艺气切入吸收塔前,为防止塔内溶液倒流出塔,下列操作方法正确的是()A、适当提高溶液

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问题:

工艺气切入吸收塔前,为防止塔内溶液倒流出塔,下列操作方法正确的是()

A、适当提高溶液循环量

B、适当降低液位

C、适当降低溶液循环量

D、适当提高液位

考点:制氢工制氢工种高级工考试制氢工种高级工考试题库
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业主方的项月管理方式主要有三种可能,在国际和国内都得到普遍应用,下列描述有误的是( )。

A.业主方的自行项目管理

B.业主方委托项目管理

C.业主方与项目管理咨询单位合作进行项目管理

D.政府及社会有关管理部门自行项目管理

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A Recent Erymology of the Word "Culture"“文化”一词的新词源
Look in an old dictionary—say, a pre-1960 Webster’s—and you’ll likely find a definition of culture (1) looks something like this: "1.The cultivation of soil. 2.The raising, improvement, or development of some plant, animal (2) product. " This use of the word has its roots in the ancient Latin word cultura, "cultivation" or "tending," and (3) entrance into the English language had begun by the year 1430. By the time the Webster’s definition above was (4) , another definition had begun to take precedence over the old Latin denotation; culture was coming to mean "the training, (5) , and refinement of mind, tastes, and manners" (Oxford English Dictionary). The OED traces this definition, which today we associate (6) the phrase "high culture," back as far as 1805; by the middle of the 20th century, it was (7) becoming the word’s primary definition.
However, if you try a more modem source, like the American Heritage English Dictionary, (8) find a primary definition of culture which is substantially different than either of the two given above: "The totality (9) socially transmitted behavior patterns, arts, beliefs, institutions, and all other products of human work and thought. " Why such a (10) , and in such a (relatively) short period of time Well, in the past 40 years, the use of the (11) "culture" has been heavily influenced by the academic fields of sociology and cultural anthropology. These fields have gradually brought (12) was once a minor definition of culture (the last of eight definitions given in the old 1958 Webster’s quoted (13) ) into the mainstream.
It is easy to imagine how the US society which was so focused on "socially transmitted (14) patterns" in the sixties would come to need a word to describe the object of its interest. The civil (15) movement during this era brought everyone’s attention to bear on cultural differences within US society, while the Vietnam War (16) to emphasize the position of the US culture in relation to other world cultures.
Over time, these new uses (17) the word culture have eclipsed its older meanings, those associated with cultivation of the land and the production of (18) . You might say that an aspect of US culture over the past 40 years is its fascination with the (19) of culture itself—a fascination which has brought about many changes in the way we speak and the (20) of words which we commonly use.

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微型计算机系统中的中央处理器主要由( )构成。

A.内存储器和控制器

B.内存储器和运算器

C.控制器和运算器

D.内存储器、控制器和运算器

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CCD黑白摄像机的电路由以下()主要部分组成。

A、外围电路

B、同步电路

C、预放电路

D、图像信号处理电路

题型:单项选择题

液位计必须垂直安装,最大垂直度小于等于()度。

A、1

B、2

C、3

D、4

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