简述高压无气喷涂。
参考答案：
靠高压泵压送涂料，获得高压的涂料，从喷嘴中喷出，遇空气后体积骤然膨胀而分散雾化，高速附着在被涂物上的一种涂装方法。
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As a considerate teacher, he or she must be good at ______ the students’ mind , seeking for the best way to help them with their problems.
A．reading
B．seeing
C．watching
D．realising
因为0.6=0.60，所以它们计数单位也相同．______．（判断对错）
