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【单选题】
下列选项中,关于传热系数K的说法错误的是哪一项( )A.
传热系数K的单位为:W/(m·K)
B.
传热系数K表示传热过程强弱的物理量
C.
传热系数的倒数称为传热热阻
D.
传热系数是指冷热流体温差为1℃时,单位时间通过单位面积上所传递的热量
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A.
16bits
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32bits
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128bits
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A.
30
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40
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50
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【单选题】IPv4地址是由( )的二进制数值构成,分成4组,转化为十进制用点分隔。 比如:202.97.179.126
A.
16bits
B.
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C.
64bits
D.
128bits