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【多选题】
检定草酸钙结晶的方法有( )A.
加稀醋酸不溶解，加稀盐酸溶解而无气泡发生
B.
加稀醋酸溶解
C.
加硫酸溶液(1→2)逐渐溶解，片刻后析出针状结晶
D.
加硫酸溶液(l→2)不溶解
E.
加稀盐酸溶解，同时有气泡发生
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