投资者依法享有资金账户中资金存取自由,且该资金可通过银证转账方式自其资金账户回到其同名银行结算账户。( )
参考答案:错
解析: 客户的现金存取通过其银行储蓄账户完成。
电泳分离血浆清蛋白(pI=4.9)和球蛋白(pI=6.6)时,为达到分离效果最好应选择电泳缓冲液的pH值是
A.pH 7.6B.pH 6.6C.pH 5.9D.pH 4.9
Five-year-old children are too young to go to school, ______? [ ]
A. are they
B. aren't they
C. were they
D. have they