转账电话单位签约客户必须绑定本单位的合法单位银行结算账户，原则上只允许绑定（）账户。
A、单位银行卡
B、个人银行卡
C、活期存折
D、支票户
参考答案：A
电机、压缩机都动作但无冷风这种现象可能的原因是管路毛细管堵塞。
Not ____ he died, he received an award for his selfless service to the old. [ ]
A. long before
B. before long
C. long ago
D. shortly before
