Why did the father give Wilson a coin and urge him to go and buy sweets?
A. Because he wanted to have a quiet breakfast, but Wilson talked to much.
Because Wilson asked for money to buy sweets.
C. Because the father didn't want the mother to find out the truth from Wilson.
D. Because the father wanted to stay alone.
查看答案
Which of the following statement is not right?
A. The father is lenient and easy-going.
B. The mother is strict.
C. Alison is caring and loving.
D. Wilson is naive and innocent.
PP代表什么塑料?
A. 聚乙烯
B. 聚丙烯
C. 聚酰胺
D. 聚苯醚
PE代表什么塑料?
A. 聚乙烯
B. 聚丙烯
C. 聚酰胺
D. 聚苯醚
热固性塑料维修的普遍方法是?
A. 焊接法
B. 化学粘接法
C. 打磨法
D. 加热校正
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