项目后评价主要是项目竣工投产()年后的全面系统评价,具有明显的动态性。
A.1~2
B.2~3
C.3~4
D.4~5
参考答案:A
What problems have you had in the western part of the country? [ ]
A.work
B.worked
C.working
D.to work
常量分析时所用试样的体积()。
A.10~100ml
B.1~10ml
C.0.01~1ml
D.0.001~0.01ml