"()occurswhentheradiopathbetweenthereceiverandtransmitterisobstr
2023-12-01单选3
"()occurswhentheradiopathbetweenthereceiverandtransmitterisobstructedbyasharpedgE、
A.directtransmission
B.reflection
C.diffraction
D.scattering"
正确答案是C
