现有浓度为0.1125mol/L的HCl溶液,用移液管移取此溶液100ml,须加入 __________ ml的蒸馏水,方能使其浓度降为0.1mmol/L.。
参考答案:12.5
架空线路的重复接地对雷电流有分流作用,有助于改善防雷性能。
Neither of them thought highly of him and they both tried to _____ him in his work.
A.hamper
B.support
C.depress
D.prevent