采用就地横移梁片铺设的专用轨道应(),轨道接头不得有错台、错牙,道床无沉陷。
A.平顺
B.轨矩正确
C.A+B
参考答案:C
She soon found that in that place she was just like a square ______ in a round hole.
A. log B. board C. peg D. hog
毛细管是一种最简单的()装置。
A、节流
B、气化
C、蒸发