建筑物的沉降观测是利用___的方法,多次测量建筑物上设置的沉降观测点和___之间的高差值,以确定建筑物的沉降量。
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
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