【单选题】—Was Lingling born in Xiamen? — . She was born in Qingdao. [ ]
【单选题】优质服务的主要标志是服务方向和______是否正确。
【简答题】已知某低速柴油机定压加热理想循环( Diesel 循环),定熵压缩前 p 1 =0.15MPa 、 t 1 =30°C ,压缩比 ε= v 1 / v 2 =10 ,定压预胀比 ρ = v 3 / v 2 =2 ,设工质为空气,比热容为定值并取 c p =1.004 kJ/(kg·K) , c V = 0.717 kJ/(kg·K) , κ =1.4 。则循环吸热量 kJ/kg ; 循环放热量 k...
【单选题】- Was your daughter born _______ Beijing ? - Yes , she was born there _______ the morning of June 2 nd .
【单选题】人类早期的( )是社会工作赖以诞生的思想渊源。
【单选题】______ in a poor family, she is used to a simple life.