【单选题】34 Why did he leave her?
A.
Because he could no longer bear her.
C.
Because his parents needed taking care of.
D.
Because he wasn't a local.
【单选题】玻璃纤维与水的物理作用使强度( ),干燥后强度恢复(可逆);
【多选题】通过对案例的了解,你认为 来访者是个什么样的人?
【单选题】Why did he leave her?
A.
Because he could no longer bear her.
C.
Because his parents needed taking care of.
D.
Because he wasn't a local.
【简答题】A.He told her about an interesting movie. B.He gave her a good grade in her Japanese class. C.He recorded some tapes especially for her. D.He helped her get into the program.
【简答题】如图所示,玻璃纤维丙苯墙体网。该产品为卷状(带卷芯),塑料膜包装, 300 克 / 平方米,门幅为 1-2 米,呈网格状;其基材为玻璃纤维长丝机织物,将合成化工乳液(分别为丙苯乳液、丙苯纳米共聚乳液、丙苯高聚物阻燃乳液、丙烯高聚物压敏胶)浸渍在玻璃纤维长丝机织物上,并行整形、烘干、定型处理后,通过印刷、裁切、包装成品。产品主要用于墙体结构的增强与保护,及其它建材制品的增强及大理石、花岗岩的表面保护...
【单选题】与慢性支气管炎病人相比,哮喘病人的特点为()
【多选题】关于玻璃纤维增强塑料(玻璃钢)门窗的描述错误的是()。
A.
国外以无碱玻璃纤维增强,制品表面光洁度较好,不需处理可直接用于制窗
B.
自主开发的玻璃钢门窗型材一般用中碱玻璃纤维增强,型材表面经打磨后,可用静电粉末喷涂,表面覆膜等多种技术工艺,获得多种色彩或质感的装饰效果
D.
玻璃钢门窗型材有很高的横向强度,一般情况下,可以不用增强型钢
E.
但门窗尺寸过大或抗风压要求高时,应根据使用要求,确定增强方式
【简答题】(2空) 根据塑料的产量和使用情况可将其分为 和 。前者是指产量大、成本低、应用面广的塑料,如聚乙烯、聚丙烯、聚氯乙烯、环氧树脂、酚醛树脂等;后者是指可以代替金属材料作为工程材料的塑料,如聚碳酸酯、尼龙、聚甲醛、聚四氟乙烯、聚酰亚胺、高密度聚乙烯、 ABS 树脂和玻璃纤维增强塑料等。
【单选题】Why did he leave her?
B.
Because he could no longer bear her.
C.
Because his parents needed taking care of
D.
Because he wasn't a local.