当精馏塔开车时升温过速易造成的后果下列叙述错误的是()。
A、大量重组分带至塔顶
B、将大量轻组分带至塔釜
C、易发生液泛现象
D、破坏塔的正常操作
参考答案:B
The European one-year risk-free rate is 1.98%, and the U.S. one-year risk-free rate is 1.08%. If the U.S. dollar per euro (USD/euro) spot rate is 1.2511, the one-year forward points for the USD/ euro forward rate are closest to:()
A. -94.0
B. -110.4
C. +111.4
电场力在一段时间内所做的功称为()
A.电功率
B.电能
C.电功