对于低温、海洋用钢、高压管线钢等,除需要硫含量很低外,还要求磷含量小于0.01%或0.005%
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测定特殊饲料中水分含量时使用的电热真空干燥箱温度要可控制在(),真空度可达13kPa。
A. 80℃±2℃
B. 103℃±5℃
C. 103℃±2℃
D. 105℃±2℃
E. C均适用
制各样品时,称取约“的试样(精确至0.0001g)于150ml锥形瓶中,加入10ml浓硝酸,瓶口放一个小漏斗静置过夜,然后加入10m1浓硫酸,冷却后再加2m1浓盐酸且盖好小漏斗,再置于恒温水浴中加热消解。
A. 正确
B. 错误
Which three customer needs are addressed by Cisco solutions?()
A. reducing day one costs
B. improving productivity
C. gaining competitive advantage
D. focusing on current needs
E. obtainingA wide variety of point products
F. reducing TCO