干燥失重测定时，若药物的熔点低，受热不稳定或水分难以去除，应采用（）
A. 液相色谱法
B. 干燥剂干燥法
C. 减压干燥法
D. 常压恒温干燥法
E. 热重分析法
查看答案
What is NOT a function of the steam drum of a marine water-tube boiler（）.
A. Receives saturated steam from the generating tubes
B. Serves as a reservoir of boiler feed water
C. Holds internal fittings for separation of moisture from steam
D. Collects steam exhausted from the turbine
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