记账式债券因为发行和交易无纸化,所以效率高、成本低且()。
A.流动性高
B.交易安全
C.灵活性高
D.交易方便
参考答案:B
---- Why weren’t you on line last night ?
---- Oh, my computer was broken and I had to have it ________ .
A.repaired
B.repairs
C.repairing
D.to repair
根据温病的发病迟早及初起是否见里热证,将其分为()、().