Which of the following is the lowest cost DB2 product that can be legally installed on a Linux server that has 6 CPUs?()
A. DB2 Express Edition
B. DB2 Personal Edition
C. DB2 Workgroup Server Edition
DB2 Enterprise Server Editio
循环冷却水系统进行微生物的生长控制时,水中游离活性氯的浓度一般可控制在()范围内。
A. 0.5~1.0mg/L
B. 0.2~0.5mg/L
拧紧力矩控制方法中的转角监控法,抗松动、抗疲劳性能较佳,为拧紧装配工艺的发展方向。
A. 正确
B. 错误
取岩心钻进,钻孔顶角的最大允许弯曲度,在100米间距内,直孔不超过(),斜孔不超过3°。
A. 4°
B. 2°
C. 3°
D. 1°