A:NaNO2溶液的pH大于7
B:用HNO2溶液做导电实验灯泡很暗
C:HNO2溶液不与硫酸钠反应
D:HNO2易分解产生NO、NO2
坚强的意志能充分激发人的潜能。( )
为了促进儿童骨骼的发育,除了给儿童多补充含钙、磷多的食物,还应补充()
________ Joe ________ Steve may go camping with you on Tuesday, because they are not allowed to go out on school days.
绝对值等于4的所有整数是____ .