结算方式按资金的流向和结算工具传送的方向分类，可分为：（）
A.电汇、信汇、票汇
B.汇款、托收、信用证
C.本票、汇票、支票
D.顺汇和逆汇
参考答案：D
All her time __________experiments, she has no time for films.
A．devoted to do
B．is devoted to doing
C．devoted to doing
D．is devoted to do
属于自然疫源性地方病的是
A．血吸虫病B．地方性砷中毒C．水俣病D．痛痛病E．尘肺
