票据和结算凭证的内容有收款人、付款人或开户银行名称、日期、（）、大小写金额、收付款地点、用途等。
A、签字
B、电话号
C、账号
D、手机号
参考答案：C
We tried ________ to persuade him to stay home, but at last, he went to the construction site in spite of
his bad illness.[ ]
A．in effect
B．in vain
C．in fact
D．in addition
设竖曲线的半径为R，竖曲线长度为L，坡度角为ω，则三者的关系为（）。
A.L＝Rω
B.R＝Lω
C.ω＝LR
D.R＝L+ω
