吸热玻璃有以下特点(1)优良的绝热性,夏天能隔热,冬天能保温;(2)遮光性好;(3)隔声性能好;(4)防结露性好;(5)质量轻。()。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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