因井底原油粘度高导致过载停机的处理方法不包括()。
A、扩大油嘴
B、上调过载设定值
C、换大电机
D、使用螺杆泵
参考答案:A
— Where did you find Mr. Smith?
— It was in the library _____ we often went to read. [ ]
A. that
B. when
C. what
D. where
支链氨基酸的英文缩写是()
A.BCAA
B.BEE
C.TPN
D.MCT
E.TNA