试题与答案

气焊、气割用的辅助工具有哪些?

题型:问答题 简答题

题目:

气焊、气割用的辅助工具有哪些?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:PQRS"r法(Glasgow):PL(pre-view)预习或浏览要记住的段落内容;Q(question)向自己提问该段的目的或意义;R-(read)仔细阅读材料;S(state)用自己的话陈述从段落中得到的信息;T-(teat...

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(    )1. A. a year before
(    )3. A. Often        
(    )4. A. say          
(    )5. A. to          
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(    )7. A. but          
(    )8. A. hardly ever  
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(    )10. A. How many    
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题型:多选题

“不必说碧绿的菜畦,光滑的石井栏,高大的皂荚树,紫红的桑椹;也不必说鸣蝉在树叶里长吟,肥胖的黄蜂伏在菜花上,轻捷的叫天子忽然从草间直窜向云霄里去了。”请回答1~4题:

1.以上一段文字,包含几种生物 [ ]

A.4

B.5

C.6

D.7

2.下列哪项不是皂荚树、蝉、叫天子等生物的基本特征 [ ]

A.需要营养物质

B.呼吸

C.生长和繁殖

D.反射

3.黄蜂和菜花的关系是 [ ]

A.合作

B.竞争

C.捕食

D.食物网

4.如果这是一个生态系统,从生态系统的组成者,还缺少 [ ]

A.非生物成份

B.分解者

C.消费者

D.生产者

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