突堤式码头易改变原沿岸水流或潮流方向和束窄河道过水断面,易引起附近岸滩发生新的冲淤变化和增加港池回淤。( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧