Was it midnight ________ the fire broke out?
A.when
B.that
C.which
D.at which
答案:A
把一条电阻为64Ω的均匀电阻丝截成等长的2段后,再并联起来,电阻变
A.32Ω
B.16Ω
C.8Ω
D.4Ω
在After Effects 6.5中如何将一段影片倒放?()
A.Time Stretch
B.Time Remapping
C.Time-Reverse Keyframes