限寄规定是本着既照顾和方便客户的合法需要和正常往来，又限制投机倒把和走私违法行为而制定的。
参考答案：对
视网膜中央静脉阻塞非缺血型的特点错误的是（）
A.视盘水肿轻微或无明显水肿
B.各分支静脉扩张、迂曲较轻
C.荧光造影视网膜循环时间延长，但少有无灌注区
D.视网膜出血及水肿较轻，视力下降不显著
E.易出现新生血管性青光眼
Beijing took steps to limit the kinds of high-risk of borrowing money from the banks that can create the high price of housing, ______ happened in the United States．
A．a．as
B．that
C．how
D．while
