磁条卡卡号第七位起是（），由6至12位数字组成，发卡机构自行赋值。
A.发卡机构标识代码
B.发卡机构自定义位
C.校验码
D.客户自定义位
参考答案：B
The old lady's hand shook frequently. She explained to her doctor_______this shaking had begun half a
year before, any ____, only because of this, she had been forced to give up her job.
A. when ; how
B. how ; when
C. how ; how
D. why ; why
在执行逮捕时，犯罪嫌疑人可能随身携带凶器的，搜查时可以不用搜查证。 ( )
