细集料的筛分试验应进行两次平行试验,以平均值作为测定值。若两次试验所得的细度模数之差大于(),应重新进行试验。
A. 0.02
B. 0.01
C. 0.2
D. 0.3
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Which is the most accurate statement regarding the business requirements development service component in the prepare phase. Select exactly 1 answer(s) from the following:()。
A. Determine the appropriate cooling temperature for a customers server room
B. Analyze the customers business requirements for a proposed solution
C. Analyze a customers ongoing operational requirements
D. Identify a customers technology requirement
以下符合规范的做法是()。
A. 24m以下的落地式单双排脚手架应编制专项方案
B. 24m以上的落地式双排脚手架应编制专项方案
C. 各种脚手架的搭设都应编制专项方案
安全风险辨识评估中在哪些情况下要进行专项辨识评估。