问题
单项选择题 A1/A2型题
不可作为不溶性骨架片骨架材料的是（）
A.乙基纤维素
B.聚甲基丙烯酸酯
C.无毒聚氯乙烯
D.海藻酸钠
E.硅橡胶
答案
参考答案：D
解析：不溶性骨架材料，有乙基纤维素(EC)、聚甲基丙烯酸酯(EuRS，EuRL)无毒聚氯乙烯、聚乙烯、乙烯、醋酸乙烯共聚物、硅橡胶等，海藻酸钠不可作为不溶性骨架片骨架材料。所以答案为D。
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不可作为不溶性骨架片骨架材料的是（）
A.乙基纤维素
B.聚甲基丙烯酸酯
C.无毒聚氯乙烯
D.海藻酸钠
E.硅橡胶
参考答案：D
解析：不溶性骨架材料，有乙基纤维素(EC)、聚甲基丙烯酸酯(EuRS，EuRL)无毒聚氯乙烯、聚乙烯、乙烯、醋酸乙烯共聚物、硅橡胶等，海藻酸钠不可作为不溶性骨架片骨架材料。所以答案为D。
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A: Excuse me. I'm your new classmate. I'm Nancy. What's your name, please? B: My name is Carol. I come from Australia. What about you? A: 1 What do you want to do? B: I want to be a shop assistant. And you? A: 2 B: Why? A: 3 B: What do your parents do? A: My father is a teacher and my mother is a bank clerk. B: 4 A: Yes, they are. Where do your parents work? B: My parents both work in a hospital. A: 5 B: They are doctors.
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