价值分析对于零件、原材料和部件的成本节约有很大的影响，它们具有什么特征？Ⅰ．低的单位

阅读理解。

     A man goes to a fast-food restaurant for lunch. "Hi," a worker says, "May I help you?" 　　

     "I'd like a hamburger, large fries, and a medium Coke." the man says. 　　

     "Anything else?" the worker asks. 　　

     "No." the man answers, "That's it." 　　

     "Is that for here or to go?" the worker asks. 　　

     "To go." the man says. 　　

     The man pays for his lunch. The worker puts the man's lunch in a bag. The man takes the bag. 

     "Thank you," the worker says."Have a nice day." 

     The man walks to a park. He is surprised. There is no French fries.There is no coke. There is

money in the bag. There are no French fries. There is money in the bag-a lot of money! The man counts

the money. Two thousand dollars! 

1. Where does the man go for lunch? 　　

     He goes to a fast-food  _____.

2. What does the man want to eat? 　　

     He wants a hamburger, large _____, and a _____ Coke.

3. Where does the worker put the man's lunch? 　　

    The worker puts it in a _____.

4. What is in the bag? 　　

    There is _____ in the bag.

5. Who puts the money in the bag? 　　

    The _____ of the restaurant puts the lunch in the bag.

下列叙述中正确的是（　　）

A．酸性氧化物一定是非金属氧化物，非金属氧化物不一定是酸性氧化物

B．碱性氧化物一定是金属氧化物，金属氧化物不一定是碱性氧化物

C．电离出的阳离子全部是H⁺的物质一定是酸

D．能与酸反应的氧化物一定是碱性氧化物

不符合尿沉渣镜检标准化要求的是（）。

A.取尿液10ml离心后保留0.2ml尿沉渣

B.先用低倍镜观察，再转高倍镜观察

C.检查细胞应观察10个高倍视野

D.检查管型应观察20个高倍视野

E.以观察到的细胞、管型的平均值报告

1996年以前，欧盟食品安全政策主要集中于（）。

A.提升农业竞争力

B.保障食品供应安全

C.保障销售渠道的顺畅

D.推动食品高端发展