The number of such vehicles（）steadily increasing. ["have been","had been","having been","has bee"]
记账式国债是由财政部发行的、在债券托管账户中记账反映债权的债券，记账式国债以（） ["全价交易","净价交易","买卖全价减去应计利息","前一天收盘价"]
梧桐具有深根性，萌芽力强，耐涝，耐修剪等特点。
工行允许办理个人存款证明的存款种类（）。 ["活期存款","通知存款","凭证式国债","教育储蓄"]
杨柳科植物雌蕊由3心皮合生，子房1室。
怎样看待营销部门在企业计划中所起的作用？
