Usually replacement of the fan blade should be ( ).
A: Replace all the 36 blades.
B: Replace individual blade.
C: Replace the damaged blade and the other two located 120 degree position.
D: Replace in pairs.
A: Replace all the 36 blades.
B: Replace individual blade.
C: Replace the damaged blade and the other two located 120 degree position.
D: Replace in pairs.
举一反三
- When the number of blades is limited, the flow is strictly guided by blade surface.
- A technician receives a computer for repair and observes that the fan on the power supply is not moving. Which of the following should the technician do？ （） A: Move the power supply voltage switch to 220 volts. B: Add an additional fan to help cool the computer. C: Replace the cable that attaches the power supply to the motherboard. D: Replace the power supply.
- We should --------experiment and observation -------- speculative theories. A. substitute/for B. substitute/with C. change /for D. replace/with A: substitute/for B: substitute/with C: change /for D: replace/with
- When the number of blades is limited, the flow is strictly guided by blade surface. A: 正确 B: 错误
- replace