某项目的净现金流量情况见下表:
该项目的基准投资回收期Pc为3年半。根据上述资料,回答下列问题。
项目投资回收期的整数年份是()。
A.4
B.3
C.2
D.1
参考答案:B
There inside he found a beautiful gold pocket watch. Running his fingers slowly ______ the fine cover, he opened it, wondering ______ what greater value it was. [ ]
A. above; in
B. through; with
C. around; about
D. over; of
A6001螺杆混合器夹套通冷却水的目的是()
A.添加剂,粉料混合均匀
B.保护物料
C.降低粉料添加剂温度防止粘结
D.冷却搅拌器