【单选题】What is the maximum efficiency of a HAWT?
【单选题】What is the direct labor efficiency variance?
【单选题】What is said to be the best way to conserve energy nowadays?
B.
Cutting unnecessary costs.
C.
Finding alternative resources.
D.
Sacrificing some personal comforts.
【单选题】what is the labour efficiency variance?
【单选题】What is the “conversion efficiency” mean?
【单选题】A 240-V DC motor(直流马达) draws 6A and develops an output power of 1.6hp. (1 hp=746 W) (a) What is its efficiency? (b) How much the power is wasted?
【单选题】What is the approximate efficiency of a hydroelectricity scheme?
【单选题】According to the passage, what is the purpose of training?
A.
To improve employee efficiency
B.
To spend excess capital
C.
To satisfy government requirements
D.
To please a supervisor