较宽的软化区间，说明胶质体中液相物质的热稳定性好，在胶质体中停留时间长。
参考答案：对
—What a big storm last night!
—Yes. I was doing my homework. Suddenly, all the lights in my house _______.
A．went off
B．turned off
C．took off
D．got off
混凝土脱落部分的修补采用的原材料是（）。
A、水泥
B、水泥砂浆
C、与配重层相同
D、以上均可
