1903年欧文斯研研制出的全自动玻璃制造机，使（）走入千家万户。A、饮料瓶 B、矿泉

岑某，男，34岁。有哮喘病史15年，两周前哮喘发作，自行反复使用β₂受体激动剂不见缓解而住院治疗。身体评估：可见胸腹矛盾运动，双肺未闻及哮鸣音。

结合病人的发病过程，引起病人目前病情变化的主要原因是（）

A.哮喘轻度急性发作

B.哮喘中度急性发作

C.β₂受体激动剂用药量不足

D.β₂受体功能亢进

E.β₂受体激动剂使用方法不当

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.

两构件通过转动副连接，则两构件间（）

A.保留一个移动，约束一个移动和一个转动

B.保留一个转动，约束两个移动

C.保留一个转动和一个移动，约束另外一个移动

神经根型颈椎病，首选的摄片体位是（）

A.颈椎双斜位

B.颈椎开口位

C.颈椎过伸位

D.颈椎过屈位

E.以上都不是

下列不属于业载的是（）

A.旅客

B.行李

C.压舱物

D.滑行油