第三方存管业务中预指定客户证件类型修改，只能修改签约状态为（）客户的证件类型。
A.预指定
B.未指定
C.已指定
D.待定
参考答案：A
单词拼写。
1. It's qu__ t __ a nice cat.
2. The bus is coming. Be c__ __ __ ful.
3. What's the time? It's a qu __ __ ter past one.
4. —How many m__ __ls do you have a day?
—Three: breakfast, lunch and supper.
5. Tigers are a kind of __n__m__l.
6. There is a smile on her f__c__.
局麻药对神经纤维的作用是（）
A．降低静息跨膜电位，抑制复极化
B．阻断Ca2内流
C．阻断K外流
D．阻断ACh释放
E．阻断Na内流
