1940年，彭德怀指挥的抗击日军的一次重大战役是[ ]

A．卢沟桥反击战

B．平型关大捷

C．台儿庄战役

D．百团大战

In your organization, you are the project manager of the engineering department. But if questions related to manufacturing arise, they are passed up to the engineering department head, who consults with the head of the manufacturing department. Once the manufacturing head gets the answers, he passes it the engineering department head, who in turn passes answer back down to you. The organization structure you are working on is______.

A．Weak Matrix

B．Matrix

C．Strong Matrix

D．Functional