小额支付系统（）处理支付业务，（）清算资金。
A.批量；全额
B.逐笔实时；全额
C.逐笔实时；轧差净额
D.批量；轧差净额
参考答案：D
He came to my class every week, but his attitude _______ he was not really interested in the subject. [ ]
A. expressed
B. described
C. explained
D. suggested
一个瓶子最多能装0.5kg的水，最多能装_________ m3的酒精．（ρ酒精=0.8×103kg/m3）；将体积分别为V1、V2的水和酒精混合，发现混合后液体的总体积V总_________ V1+V2，（选填“＜”、“=”或“＞”）这一实验表明液体分子间有_________．
