防护冷却水幕应采用()喷头。
A、干式喷头
B、闭式喷头
C、开式洒水喷头
D、水幕喷头
参考答案:D
与普通商品的交易不同,技术的转让是()的转让。
A.所有权
B.使用权
C.占有权
D.收益权
Performing()involves monitoring specific project results to determine if they comply with relevant quality standards and identifying ways to eliminate causes of unsatisfactory results.
A.qualityplanning
B.qualityassurance
C.qualityperformance
D.quality control