【单选题】中间冷却器的操作说法错误的是( )
B.
中冷器的液面应保持在液面指示器高度的50%左右
C.
中冷器的工作压力一般应在1.4MPa(表压)以内
D.
停止工作后,中间压力回升不得超过0.4MPa(表压)
【单选题】外贸跟单中的“单”,下列表述正确的是( )
【单选题】外贸跟单中的“单”,下列表述正确的是( )。
【单选题】外贸跟单中的“单”,下列表述正确的是( )。
【简答题】A.Rome is the most beautiful city. B.Paris is the most beautiful city. C.London is net as beautiful as Paris and Rome. D.Madrid is the most beautiful city.
【单选题】外贸跟单中的“单”,下列表述正确的是( )
【简答题】Breakfast is the most important meal of the day. It is also the most neglect (忽视). Common reasons for not eating breakfast include having no time, not feeling hungry, traditional dislike and dieting. ...