【单选题】500 毫升2:3:1液的配制方案()
A.
5%或10%葡萄糖500ml, 10%氯化钠30ml,5%碳酸氢钠47ml
B.
5%或10%葡萄糖500ml, 10%氯化钠15ml,5%碳酸氢钠24ml
C.
5%或10%葡萄糖500ml, 10%氯化钠20ml,5%碳酸氢钠33ml
D.
5%或10%葡萄糖500ml, 10%氯化钠20ml
【多选题】实验室需配制一种强酸溶液500mL,c(H + )=2mol/L,下列配制方法可行的是( )
A.
取100 mL 5mol/LH 2 SO 4 ,加入400mL水
B.
取200 mL 5mol/LHCl,加水稀释至500mL
C.
取100mL 5mol/LH 2 SO 4 ,加水稀释至500mL
D.
取100mL 5mol/LHNO 3 ,加水稀释至500mL
【单选题】Many a player who had been highly thought of has ________ from the tennis scene.
【单选题】Many a player who had been highly thought of has ________ from the tennis scene.A.disposedB.disapp
A.
3. Many a player who had been highly thought of has ________ from the tennis scene. A.disposed
【单选题】— _____ are these clothes? —They are those _____ . [ ]
【简答题】Many a player who had been highly thought of ______ from the tennis scene.许多得到高度评价的运动员都已经从网球赛场上消失了。
【单选题】Many a player who had been highly thought of ______ from the tennis scene.