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A. Doctor and husband.
B. Shop-assistant and customer.
C. Host and guest.
D. Teacher and student.
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公务员的考核形式有()。
A. 平时考核
B. 实地考核
C. 定期考核
D. 年终考核
物业管理企业的专项维修资金主要来源于( )。
A. 企业投资的款项
B. 业主共有物业的收益
C. 社会捐赠或政府拨款的费用
D. 业主大会中决定分摊的费用
E. 法规规定的费用
Which of the following sentences is NOT true according to the passage?根据以下内容,回答下面的题目。Packaging is a very important form of advertising. A package can sometimes motivate people to buy prod- ucts. For example, a little child might ask for a breakfast food contained in a box with a picture of a TV charac- ter. The child is more interested in the picture than in breakfast food. Pictures for children to color or cut out, games printed on a package, or a small gift inside a box also motivate many children to buy products or to ask their parents to buy for them.Some packages suggest that a buyer will get something for nothing. Food products sold in reusable contain- ers are examples of this. Although a similar product in plain container might cost less, people often prefer to buy the product in a reusable glass or dish, because they believe the container is free. However, the cost of the con- tainer is added to the cost of the product.The size of a package also motivates a buyer. Maybe the package has "Economy Size" or "Family Size" printed on it. This suggests that the larger size has the most product for the least money. But that is not always true. To find it out, a buyer has to know how the product is sold and the price of the basic unit.The information on the package should provide some answers. But the important thing for any buyer to remember is that a package is often an advertisement. The words and pictures do not tell the whole story. Only the product inside can do that."A buyer will get something for nothing" in paragraph 2 may probably mean_____________
A. ln fact glasses or dishes used for packaging do not cost money at all.
B. "Family Size" printed on the package means that it is rather economic.
C. To a child, even to an adult, the form is far more important than the content.
D. Words and pictures written on the package are thought to be an advertisement.
双硫腙比色法测定铅时,加人柠檬酸铵的目的()。
A. 与许多金属离子形成稳定的络合物而被掩蔽
B. 防止在碱性条件下碱土金属的沉淀
C. 防止三价铁离子对双硫踪的氧化
D. 使铅与双硫腙形成的络合物稳定