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【判断题】

聚烯烃中阻燃剂用得较多的是卤代烃,与 Sb 2 O 3 并用; 聚苯乙烯( PS )与 ABS 树脂阻燃剂一般采用含卤磷酸酯和有机溴化物; PVC 常用阻燃剂为 Sb 2 O 3 与氯化石蜡并用,或用磷酸酯。

A.
正确
B.
错误
举报
参考答案:
参考解析:
.
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举一反三

【单选题】Desperately short of living space and dangerously prone to flooding, the Netherlands plans to start building homes, businesses and even roads on water. With nearly a third of the country already cover...

A.
most parts of the country are covered by water
B.
the country is constantly threatened by floods
C.
it will promote the cultivation of flowers
D.
people think it better to live on water

【单选题】聚烯烃浴热分解系统采用()反应器。

A.
槽式聚合浴
B.
柜式聚合浴
C.
桶式聚合浴
D.
槽式分离浴