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单选题
Polyurethane is used for producing the fuselage, wing tips, and other curved parts of small aircraft; relatively inexpensive, fuel resistant, and compatible with most adhesives; do not use a hot wire to cut polyurethane foam; easily contoured with a large knife and sanding equipment.
A
A.聚氨酯被用于生产小型飞机的机身、机翼尖和其他曲面部件；相对便宜，抗燃油，与大多数胶粘剂兼容；不要使用热线切割聚氨酯泡沫；使用大型刀具和打磨设备可很容易地塑形。
B
B.聚氨酯被用于生产小型飞机的机身、机翼尖和其他曲面部件；相对便宜，不易与燃油发生反应，与大多数胶粘剂兼容；不要使用热线切割聚氨酯泡沫；使用大型刀具和砂子可很容易地塑形。
C
C.聚氨酯被用于生产小型飞机的机身、机翼尖和其他曲面部件；相对便宜，不易与燃油发生反应，与大多数胶粘剂兼容；不要使用热线切割聚氨酯泡沫；使用大型刀具和砂纸可很容易地塑形。
答案解析
正确答案：A
相关知识点：
聚氨酯制机身件，便宜抗燃油易塑
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