采用价值工程的方法是投资控制的纠偏措施的（）。
A．组织措施
B．管理措施
C．经济措施
D．技术措施
参考答案：B
He seems _________the homework, for he was taking a walk on the playground. [ ]
A. has finished
B. to have finished
C. to finish
D. finished
氧气瓶容积40L，在15MPA.压力下可贮存60m3氧气。
