【单选题】锅炉点火操作时,当锅水开始汽化,由各排放点排入扩容器,上汽包水位有所下降,处于自控的LIC-01将以等量的上水加以补充。即通过上水流量可以折算排空蒸汽流量。此过程应持续一定时间,称为“置换”,目的是
A.
将锅炉水汽系统中的空气通过汽化的蒸汽置换掉,提高产汽产量
B.
将锅炉水汽系统中的空气通过汽化的蒸汽置换掉,提高产汽质量
C.
将锅炉水汽系统中的空气通过汽化的蒸汽置换掉,保证系统稳定
D.
将锅炉水汽系统中的空气通过汽化的蒸汽置换掉,保证安全
【判断题】作家进行“自我治疗”的过程未必完全是自觉的。
【简答题】What is sole proprietorship?
【简答题】What is sole proprietorship?
【判断题】The goal of yield management is to never turn away a potential guest.
【多选题】韦伯认为组织中的权力有以下哪几种类型?( )
【单选题】The advantages of the sole proprietorship include the following except
A.
being their own boss, easy to close a business and demanding on time
B.
having all profits and losses, being their own boss and easy to start a business
C.
easy to start a business, easy to close a business
【单选题】患者男,76岁。口腔手术后需鼻饲,护士在给患者插胃管时,患者出现咳嗽,呼吸困难等情况,下列措施正确的是