在测定样品中氨浓度时。需要无氨蒸馏水,如何制备()。
A.亚沸蒸馏
B.全玻蒸馏
C.加硫酸蒸馏
D.加氢氧化钠蒸馏
E.离子交换
参考答案:C
There a basketball match between Class One and Class Three this afternoon.
A.is going to be
B.will have
C.are going to be
D.is going to have
以下疾病可伴有沟纹舌的发生,除了()
A.三期梅毒
B.银屑病
C.舍格伦综合征
D.梅-罗综合征
E.莱特尔综合征