增加货物的疏密度通常会使运输成本（）。
参考答案：降低
This library has available _____ you want to borrow for your school．
A．as children’s many books as
B．as many children’s books as
C．children’s books as many as
D．children’s as many books as
对于“企业用现金支付职工工资”的经济业务，应当编制( )。
A．收款凭证B．付款凭证C．转账凭证D．付款凭证或转账凭证
