下列______属于膳食调查的常用方法。
A.称重法
B.机体营养状况检查
C.24h回顾法
D.记账法
E.化学分析法
参考答案:A,C,D
With the development of our country,more and more students ______ to university. [ ]
A. admit to
B. admitted to
C. are admitted
D. are admitted to
通信管道工程宜自来水或洁净的天然水,水的比重为1,容量为()kg/m3。
A、800
B、900
C、1000