You must own at least two professional sets of dress for job-hunting.
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The number of your professional dress should be based on your financial condition.
A. 对
B. 错
在热老化测试中,试样的摆放与箱内壁间距不小于 ( )。
A. 20mm
B. 40mm
C. 50mm
D. 70mm
在测试热老化试样时,热老化试验箱应满足的工作温度是( )。
A. 40~200
B. 50~200
C. 50~300
D. 30~200
塑料热老化试样按照国家哪个标准进行测试( )。
A. GB/T7141─2008
B. GB/T7241─1995
C. GB/T8541─2008
D. GB/T7341─2008
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