变压器铜损等于铁损时最经济。

I _____ a lot from this guy. He borrowed my clothes, he borrowed my money, he borrowed my tennis racket. But when I caught him using my toothbrush that was the last straw, so I kicked him out!

A．sped up with

B．mixed up with

C．put up with

D．teamed up with

生物体细胞利用氧，将有机物分解成二氧化碳和水，并且将储存在有机物中的能量释放出来，供给生命活动的需要，这个过程叫做______，它主要在______内进行，它是生物的共有的特征，请写出它的反应式______．

I am quite busy. I don't know _____ I will have time or not tonight.[ ]

A. if

B. weather

C. whether

D. when

对三叉神经的描述，错误的是（）

A.运动纤维可支配咀嚼肌运动

B.眼神经的分支是眶上神经

C.眼神经只分布于眼球

D.颏神经是下颌神经的分支

E.上颌神经的终支是眶下神经