（）提取物含有多种生理活性物，主要为芦荟素、芦荟大黄素、蛋白质、维生素B等有效成分。
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模压工艺中，为了避免焦化、脆裂缺陷，铝楦温度不宜过高，内底帮面应该选用耐高温材料。
A. 正确
B. 错误
电视台播放他人享有著作权的录像制品，应当取得著作权人和录像制作者许可，并支付报酬。
A. 正确
B. 错误
对于熔融指数仪所有使用过的和修复过的部件要根据原厂商产品规格的（），决定其维修性。
A. 范围限度
B. 密封性
C. 保护措施
D. 公差检查
In the design of a QoS solution， which two factors should be taken into consideration？（）
A. On congested links， all forms of traffic will require some form of Qo
B. All traffic types and requirements should be examined to determine the number of traffic classes required.
C. In the implementation of link efficiency mechanisms on links that typically transport relatively large packets， header compression will be most efficient.
D. In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， header compression will be most efficient.
E. In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， payload compression will be most efficient.
F. Payload compression provides more available bandwidth and reduces processing delay time.
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