For the gas viscosity, viscosity of a fluid is a measure for the ( ) of fluids to flow.
A.
external resistance
B.
internal resistance
C.
internal drive
D.
external drive
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举一反三
【简答题】Choose an appropriate determiner to fill in each of the blanks:He was on leave _________days.A. the few last B. few another C. few other D. the last few