装煤车蓄能器充氮压力和动作压力分别是()
A. 54kg/cm和54kg/cm
B. 54kg/cm和100kg/cm
C. 100kg/cm和54kg/cm
D. 100kg/cm和100kg/cm
Temperatureandmoisturecharacteristicsaremodifiedinawarmorcoldairmassdueto().
A. pressurechangesintheairmass
B. movementoftheairmass
C. theheterogeneousnatureoftheairmass
D. upperlevelatmosphericchanges
宇治茶中的特级茶被称为()。
A. 极上
B. 别仪
C. 白袋
D. 极前
Theinterfacebetweentheliquidseal(water)andtheoilshouldbepositioned()possibletothebowlperiphery.
A. asfaras
B. assoonas
C. ascloseas
D. ascloseras