地表取水水源论证是针对建设项目业主提出的()进行的。
A.取水方案
B.用水方案
C.取、用水方案
D.取、退水方案
参考答案:C
常见汽轮机的配汽机构有提板式、凸轮传动式和()。
A、直接带动式
B、间接带动式
— Hi, Tom. Any idea where Jane is?
— She _____ in the classroom. I saw her there just now. [ ]
A. shall be
B. should have been
C. must be
D. might have been