玻璃的遮阳系数是评价玻璃本身阻挡室外（）进入室内的（）。
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You notice smoke coming from an open laundry room doorway．After activating the fire alarm，which of the following would you do FIRST（）.
Attempt to determine what is burning
B. Acquire the nearest self contained breathing apparatus
C. Break out the nearest fire hose
D. Wait for the fire team to arrive and assist as directed
下列物态变化中，属于汽化现象的是（）
A. 春天，冰雪消融
B. 夏天，晾在室内的湿衣服变干
C. 秋天，早晨草木上露珠的形成
D. 冬天，湖面的水结成冰
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