有关细菌培养基的说法,错误的是()。 A.固体培养基中的琼脂含量为2%~3% B.半

题型:单项选择题 A1/A2型题

问题:

有关细菌培养基的说法,错误的是()。

A.固体培养基中的琼脂含量为2%~3%

B.半固体培养基中的琼脂含量为0.2%~0.5%

C.固体培养基中的琼脂具有重要的营养价值

D.观察细菌的动力用半固体培养基

E.葡萄糖蛋白胨水为常用的鉴别培养基

考点:微生物检验技术(师)专业实践能力(综合练习)专业实践能力(综合练习)题库
题型:单项选择题 A1/A2型题

佣金的支付通常采用______。

A.交易达成前预付

B.达成交易时支付

C.卖方收到全部货款后支付

D.中间商在付款时直接从货价中扣除佣金

E.合同履行后逐笔支付或按约定期限支付

题型:单项选择题 A1/A2型题

The producers of instant coffee found their product strongly resisted in the market places despite their manifest advantages. Furthermore, the advertising cost for instant coffee was far greater than that for regular coffee. Efforts were made to find the cause of the consumers “seemingly unreasonable resistance to the product”. The reason given by most people was dislike for the taste. The producers suspected that there might be deeper reasons. However, this was confirmed by one of motivation research's classic studies, one often cited(引用)in the trade.

Mason Haire, professor of the University of California, constructed two shopping lists that were the same except for one item. There were six items common to both lists: hamburger, carrots, baking powder, bread, canned peaches and potatoes, with the bands or amounts specified. The seventh item, in the fifth place on both lists, read “1 Ib. Maxwell House coffee” on one list and “Nescafe instant coffee” on the other. One list was given to each person in a group of fifty women, and the other list to those in another group of the same size. The women were asked to study their lists and then to describe, as far as they could, the kind of woman(“personality and character”)who would draw up(制定)that shopping list. Nearly half of those who had received the list including instant coffee described a housewife who was lazy and a poor planner. On the other hand, only one woman in the other group described the housewife, who had included regular coffee on her list, as lazy; only six of that group suggested that she was a poor planner. Eight women felt that the instant-coffee user was probably not a good wife. No one in the other group drew such a conclusion about the house-wife who intended to buy regular coffee.

53. In this instance, the purpose of motivation research was to discover      .

why people drink coffee

B. why instant coffee was successful

C. why regular coffee was successful

D. the real reason why people would not buy instant coffee

54. This investigation indicates that       .

50 percent of housewives are lazy

B. housewives who use instant coffee are lazy

C. many women believe that wives who use instant coffee are lazy

D. wives who use regular coffee are good planners

55. On the results of this test, the producers probably revised their advertising to show a     .

lazy housewife using regular coffee

B. hard-working housewife using instant coffee

C. lazy housewife using instant coffee

D. man obviously enjoying the taste of instant coffee

56. It is implied but not stated that       .

A. Despite its advantages, most people dislike instant coffee because of its taste.

B. The advertising cost for instant coffee was greater than for regular coffee.

C. Very often we do not know the real reasons for doing things.

D. Taste is the principal factor in determining what we buy.

题型:单项选择题 A1/A2型题

当前,人们的生活已离不开电磁波,下列说法正确的是(  )

A.把带电体和永磁体放在一起,就会在周围空间产生电磁波

B.电磁波在传播过程中,其波长绐终保持不变

C.电视机、收音机和手机所接收的信号都属于电磁波

D.微波炉内所产生的微波不是电磁波,而且波长微小的机械波

题型:单项选择题 A1/A2型题

尽管大家开始抵制珍稀动物的皮草产品,但仍有家居制造商将珍稀动物的皮毛用于家居饰品。几年前专家发明了一种新的高仿合成皮草,受到了家居制造商的广泛好评。但从最近几年的统计看,各地为获取皮毛而对珍稀动物进行捕杀的活动却并没有减少。以下选项中,最有助于对“捕杀活动没有减少”进行解释的是( )。

A.生产新的高仿合成皮草比生产原来的合成皮草的成本更低
B.新的高仿合成皮草与动物皮毛的质地相似,很难区分
C.绝大部分珍稀动物的皮毛用在越来越流行的皮草服饰上
D.家居制造商在销售大的家居物件时,往往将家居饰品当作赠品免费送给购买者

题型:单项选择题 A1/A2型题

为了在报表中打印当前时间,应该插入一个

A) 标签控件
B) 文本控件
C) OLE对象
D) 域控件

更多题库