当调车车列每加速、减速一次即溜出一个车组，调车车列进行回拉，进行下一车组的溜放，这种

绘制一张学校平面图，采用下列哪一种比例尺最适合[ ]

A．1∶1000

B．1/3000000

C．

D．图上1厘米代表实地距离2千米

-The weather has been very hot and dry.    

-Yes. If it had rained even a drop, things would be much better now! And my vegetables _____.     [ ]

A. wouldn't die            

B. didn't die    

C. hadn't died              

D. wouldn't have died

Mum, my pants are too ______. I want a long pair. [ ]

A. small

B. big

C. short

D. new

压力对甲醇合成反应的影响如何？

在诉讼中，甲认为其享有对乙公司的代理权，其以乙公司名义与丙公司签订的合同应有效。而乙公司则认为只授权给了丁，甲并没有得到其授权。根据民事诉讼的举证原则，本案中关于代理权的举证责任应当由( )承担。

A．甲

B．乙公司

C．丁

D．丙公司