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允许偏差点数中必须有90%以上偏差值在允许范围内才能达到优良工程的要求。( )

A. 对
B. 错

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钢筋的塑性性能指标，是为了保证钢筋有良好的工作性能和加工性能、焊接性能。( )

A. 对
B. 错

调直切断机的弹簧预压力过大，会导致钢筋连切现象。( )

A. 对
B. 错

What will the man most probably do

A. It doesn’t appeal to her.
B. It’s incredibly delicious.
C. She has already tasted it.
D. There is no more left.

Suppose you are a college teacher, and you have ordered some textbooks in a publishing company. The company, which acknowledges your order on 20th September, has delayed the delivery. Write a letter of complaint. You should write approximately 100 words. Do not sign your own name at the end of your letter. Use "the Peking University "instead. You do not need to write the address.