【多选题】下列说法正确的有( )
C.
左旋多巴具有邻苯二酚(儿茶酚)结构,极易被空气中的氧氧化变色,注射剂应加入抗氧剂
【单选题】As the temperature for a given mass of air increase, the().
C.
relative humidity increases
D.
relative humidity decreases
【单选题】单元工程指分部工程中由几个工种施工完成的( )。
【单选题】A given increase in demand will raise the equilibrium quantity exchanged:
A.
unless supply is perfectly inelastic.
B.
more in the long run than in the short run.
C.
in the market for normal goods.
【判断题】从营养的角度而言,大米加工精度越高越好。