投资决策的条件是( )。
A: MEC大于r
B: MEC小于r
C: MEC等于r
D: 以上不确定
A: MEC大于r
B: MEC小于r
C: MEC等于r
D: 以上不确定
举一反三
- 采用溶剂极性递增的方法进行活性成分提取，下列溶剂排列顺序正确的是（） A: C B: CHCl、MeC C: AcOEt、EtO D: HO E: C F: CHCl、AcOEt 、MeC G: EtO H: HO I: H J: AcOEt、EtO K: MeC L: CHCl、CH M: CHCl、AcOEt、C N: MeC O: EtO P: HO Q: H R: AcOEt、MeC S: EtO T: C U: CHCl
- MEC是移动边缘计算（)
- 词汇与结构The PMC uses MEC power lever angle, N1 speed, and inlet temperature and pressure to ________, or trim, the MEC to obtain the desired N1 speed.
- MEC on CFM56-3 engine can control and schedule LPTCC. ( )
- MEC on CFM56-3 engine can control and schedule fuel flow. ( )