She was injured in the accident and unfortunately she slowly ____(流血)to death.
如果电路出了故障,我们可以自制一个____来检测。但我们不能用它来检测家用____ V电器的电路。
25℃时,有100mL 0.1mol/LNaHB溶液pH=1
(1)若向该溶液中加V1 mL水,使溶液pH变为2,则V1=____ mL (设溶液体积无变化).
(2)25℃时此溶液和某浓度氨水pH之和为14,二者等体积混合后溶液中离子浓度由大到小的顺序为: ____ .