题目内容

Can I offer you a drink?

A. Host
B. Guest

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Is there anything I can bring? _________

A. Host
B. Guest

You’re welcome to bring a date.

A. Host
B. Guest

Can I bring the kids, or is it adults only?

A. Host
B. Guest

一台搅拌楼的每盘之间,各搅拌楼之间,拌和物的坍落度最大允许偏差为( )。

A. ±2mm
B. ±5mm
C. ±8mm
D. ±10mm

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