若反滤层厚20~40cm,则其允许偏差应为±5cm。
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若反滤层厚20~40cm,则其允许偏差应为±3cm。
A. 正确
B. 错误
郭敬明在2006年创办的流行青春题材的杂志叫什么?
A large number of people()present at the meeting, which was out of our expectation.
A. was
B. were
C. have
D. ha
下列哪一种品类在制定品类目标时,对客流量的要求最为严格()。
A. 便利性品类
B. 季节性品类
C. 目标性品类
D. 常规性品类