建筑智能化工程是以（）为核心的通信和控制系统，自动化程度高，元器件与线路均有一一对应

大连机械设备进出口公司(2102910×××)进口一批电视机零件，其中发票第1项商品对应进料非对口手册第23项料件，法定计量单位为千克；发票第2～4项为一般贸易进口货物。装载货物的运输工具于2007年8月12日申报进境。

报关单中各有20个已填(包括空填)栏目，(标号 A～T)，根据提供的原始单据指出第二处填制错误。

痰气交阻，上蒙清窍所致厥证为（）.

A.痰厥

B.食厥

C.血厥

D.气厥

E.暑厥

内因子是哪种细胞产生的

A．主细胞
B．壁细胞
C．黏液细胞
D．胃泌素细胞
E．肥大细胞

Watch a baby between six and nine months old, and you will observe the basic concepts of geometry being learned. Once the baby has mastered the idea that space is three-dimensional, it reached out and begins grasping various kinds of objects. It is then, from perhaps nine to fifteen months, that the concepts of sets and numbers are formed. So far, so good. But now an ominous development takes place. The nerve fibers in the brain insulate themselves in such a way that the baby begins to hear sounds very precisely. Soon it picks up language, and it is then brought into direct communication with adults. From this point on, it is usually downhill all the way for mathematics, because the child now becomes exposed to all the nonsense words and beliefs of the community into which it has been so unfortunate as to have been born. Nature having done very well by the child to this point, having permitted it the luxury of thinking for itself for eighteen months, now abandons it to the arbitrary conventions and beliefs of society. But at least the child knows something of geometry and numbers, and it will always retain some memory of the early happy days, no matter what vicissitudes it may suffer later on. The main reservoir of mathematical talent in any society is thus possessed by children who are about two years old, children who have just learned to speak fluently.

Which of the following conclusions is supported by the passage().

A. Preschool education should stress society’s beliefs and conventions.

B. The language concepts used in early education interfere with mathematical reasoning.

C. Language teaching should incorporate some mathematical formulas.

D. It is hopeless to try to teach children mathematics after the age of two.

急性肺水肿患儿吸氧时，湿化瓶中氧气通过酒精适宜的浓度是（）。

A.<20%

B.20%～30%

C.30%～50%

D.50%～100%

E.>100%