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问题 单项选择题

水带织物层与衬里（或覆盖层）之间的附着强度不应低于（）N/25mm。

A.10.0

B.20.0

C.30.0

D.40.0

答案

参考答案：B

问答题
根据所给图画回答下面的问题。
1. How is the weather?
                                        		                                          
2. Is it windy? 
                                          		                                            

3. Is it snowy? 
                                       
    What colour is snow? 
                                       

                                           
4. What is it? 
                                       
    Is it hot? 
                                       		                                         
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选择题

用科学记数法表示0.0000907，得[ ]

A．9.07×10﹣4

B．9.07×10﹣5

C．9.07×10﹣6

D．9.07×10﹣7
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