![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
上海某店桌子83张,11月份翻台率5.2,深夜班总桌数1480桌,测算门店传菜组需要几个收台人员(1.2元)(扣除月假工资313元;保底工资4300元)()
A.3
B.4
C.5
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
3
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.3
B.4
C.5
3
已知某台汽包锅炉的水冷壁压力pww=18.50MPa,质量流速ρω=1000~2500kg/(m2·s),质量含汽率x=0.25、0.3、0.35。计算该锅炉水冷壁的两相流体摩擦阻力系数并对计算结果进行分析与讨论。
A.99.8%
B.97.3%
C.95.3%
D.96.3%
A.91.44
B.93.00
C.95.25
D.95.45