"It just means I now have a better understanding of what's _____ stake, and how giving up is not an option." (Saflem: Why I keep speaking up even when people mock my accent)
A.
at
B.
on
C.
for
D.
by
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举一反三
【单选题】The correct order of thermal conductivity is .
【判断题】导热系数λ是在温差1K时,每秒通过面积为1m2、厚度为1m物料层的热量。热量的单位是J。因此λ的单位为J/(m·s·K),即W/(m·K). The coefficient of thermal conductivity is the heat that passes through a material layer of 1m2 or 1 meter thickness per second a...