蒸汽锅炉汽包内的水的温度（）。
A.小于100℃
B.等于100℃
C.与饱和蒸汽的温度一致
参考答案：C
The twins were so much alike; I could hardly ________ Tom.
A．pick up
B．pick out
C．pick off
D．pick at
什么叫偏析？
