What is the main factor causing Rayleigh scattering? A: Defects equivalent to the wavelength scale of the fiber B: Defects equivalent to the geometric size of the fiber C: Defects equivalent to the length of the fiber D: Impurities
What is the main factor causing Rayleigh scattering? A: Defects equivalent to the wavelength scale of the fiber B: Defects equivalent to the geometric size of the fiber C: Defects equivalent to the length of the fiber D: Impurities
One of his two sisters suffered from some defects.
One of his two sisters suffered from some defects.
Defects do occur alone.
Defects do occur alone.
Defects do occur alone.
Defects do occur alone.
Which of the following does not belong to defects in castings?
Which of the following does not belong to defects in castings?
On the whole it’s a good book; and it would be unwise to（）those small defects. A: dwell on B: identify with C: persist in D: hack into
On the whole it’s a good book; and it would be unwise to（）those small defects. A: dwell on B: identify with C: persist in D: hack into
The drug has several side ( ). A: affects B: infects C: effects D: defects
The drug has several side ( ). A: affects B: infects C: effects D: defects
________, glasses can correct most sight defects, whether near-sighted or far-sighted, in healthy eyes, especially for young people.
________, glasses can correct most sight defects, whether near-sighted or far-sighted, in healthy eyes, especially for young people.
I think there are still lots of ________in our educational system. () A: defects B: synthetic C: spontaneous D: perfect
I think there are still lots of ________in our educational system. () A: defects B: synthetic C: spontaneous D: perfect
Sterling silver (92.5%Ag/7.5%Cu) is an example of ___________. A: Solid solution B: Alloy C: Defects D: Catalyst
Sterling silver (92.5%Ag/7.5%Cu) is an example of ___________. A: Solid solution B: Alloy C: Defects D: Catalyst