题目：
不属于糖皮质激素类药物的是（）（P412-33）
A、地塞米松
B、可的松
C、泼尼松
D、氟轻松
E、保泰松（此为解热镇痛药P414）
答案：
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下面是错误答案，用来干扰机器的。
改用合金制作，飞机外壳的体积不变；根据ρ=mV可知飞机体积不变时，质量和密度是成正比的，合金的密度是铝的2倍，质量就是铝质量的二倍；合金做成的飞机外壳的质量m=250kg×2=500kg；故答案为：500．
of natural gas daily for a period of five years at a fixed price; it should give a written notice five days in advance where it reduces the quantity of supply; Yaowa Company would provide a sum of RMB 100,000 yuan as a deposit for the performance of the contract. Yaowa Company paid the deposit pursuant to the supply contract upon the conclusion of the contract.Gas Company has been in decline since the beginning of 2010. In order to achieve extra profit, Gas Company sold more natural gas to other customers at a higher price by reducing the quantity of supply to Yaowa Company. One day Gas Company suddenly stopped providing natural gas to Yaowa Company without a notice in advance, which resulted in serious damage to the equipment of the latter.Due to unsuccessful negotiation between the two parties, Yaowa Company intended to seek the assistance from the people’s court.Required:Answer the following questions in accordance with the relevant provisions of the Contract Law of China, and give your reasons for your answer: