用于购买机器、厂房、设备等劳动资料的资本属于（）
A.固定资本
B.流动资本
C.不变资本
D.可变资本
E.生产资本
参考答案：A, C
Bob’s salary is three times ______, so John admires Bob very much.
A．as high as that of John
B．as bigger as that of John
C．as high as John
D．as much as John
渔业经济活动自身的特点是？
