在（ ）温度范围内，聚合物（非晶及结晶）才具有典型的应力-应变曲线。 A: Tb < T < Tg B: Tg < T > Tf C: Tb > T > Tg D: Tg < T < Tm

在（）温度范围内，玻璃态聚合物才具有典型的应力-应变曲线。 A: Tb﹤T﹤Tg B: T﹤Tg﹤T﹤Tf C: T﹤Tg﹤T﹤Tm

在（　）温度范围内，玻璃态聚合物才具有典型的应力-应变曲线。 A: Tb＜T＜Tg B: Tb＜T＜Tm C: Tg＜T＜Tf D: Tg＜T＜Tm

已知T（1）=9，T（2）=8，T（0）=5，Total=T（1）+T（2）+T（0），则Total=（）。 A: 9 B: 22 C: 8 D: 5

在哪个温度范围内，非晶玻璃态聚合物才能发展大形变。（ ） 未知类型：{'options': ['Tg﹤T﹤Tm', 'Tg﹤T﹤[img=21x20]17d62297d83c5e8.png[/img]', 'Tb﹤T﹤Tg', 'Tg﹤T﹤[img=21x20]17d62297d83c5e8.png[/img]'], 'type': 102}

在（ ）温度范围内，聚合物（非晶及结晶）才具有典型的应力-应变曲线。 A: Tb &lt; T &lt; Tg B: Tg &lt; T &gt; Tf C: Tb &gt; T &gt; Tg D: Tg &lt; T &lt; Tm

已知T（1）=9，T（2）=8，T（0）=5，Total=T（1）+T（2）+T（0），则Total=（）。

‌表达式Len("幸运52")的值是（ ）。‎ A: 0 B: 4 C: 6 D: 8

下列程序的运行结果是（ ）。t = 0 while t &lt; 5: print(t, " is less than 5") t = t + 1else: print(t, " is not less than 5") A: 0 is less than 51 is less than 52 is less than 53 is less than 54 is less than 55 is not less than 5 B: 1 is less than 52 is less than 53 is less than 54 is less than 55 is less than 55 is not less than 5 C: 0 is less than 51 is less than 52 is less than 53 is less than 54 is less than 5 D: 1 is less than 52 is less than 53 is less than 54 is less than 55 is less than 5

烟烙烬式气灭系统使用的混合气体的成份：（） A: 52% B: 40% C: 和8%CO D: 52% E: 40%Ar、和8%CO F: 52% G: 40% H: 和8%CO I: 52% J: 40%Ar、和8%CO