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问题 单项选择题

在统计质量成本时，下面哪些成本不应该计入外部故障成本？产品交付后（）

A、产品责任成本

B.保修费用

C.投诉处理费用

D.因质量达不到等级导致降级损失费用

答案

参考答案：D

补全对话，情景问答

Read and choose. (根据上下文，找出适当的句子，将其标号填在横线上)

A. Hold on,  please.           

B. I'm doing my homework, now.

C. Who's that?                

D. What is he doing?          

E. It's Mary here.

Mary: Hello.

Helen: Hi.  This is Helen speaking.

Mary: 1. ________________ Can I speak to your brother, Peter? 2. ________________

Helen: He is reading a book. 3. ________________ Peter, it's for you.

Peter: OK. I'm coming. Thank you. It's Peter here. 4. ________________

Mary: This is Mary. 5. ________________I have a question.
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选择题

将80 g质量分数为35%的浓盐酸稀释成10%的稀盐酸，需加水的质量为(　　)。

A．80 g

B．100 g

C．200 g

D．280 g
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