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举一反三
【单选题】Task 1 Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A, B, C, a...
A.
in his mind
B.
in his laboratory
C.
with microscope
D.
with telescopes
【单选题】误码率指的是（）。
A.
发生误码的个数与总码数的比值;
B.
未发生误码的个数与总码数的比值;
C.
发生误码的个数与未发生误码的个数的比值;
D.
未发生误码的个数与发生误码的个数的比值;