柜员发售或签发有价单证，应坚持先收款、后办理的原则。
参考答案：对
Areas where students have particular difficulty have been treated ________ particular care.
A．by
B．with
C．as
D．in
可行性研究阶段坝址的主要勘探剖面线上勘探点的间距为（）。
A.不大于30m
B.不大于50m
C.不大于100m
D.不大于150m
