矩形试样可分为带肩试样和不带肩试样,在仲裁试验时,应采用()。
A.带肩试样
B.不带肩试样
C.两者皆可
参考答案:A
Can you see the red car over there? It ______ my brother lots of money. [ ]
A. spent
B. took
C. paid
D. cost
与1xEV-DV相比,1XEV-DO()。
A.控制复杂
B.控制简单
C.成本较高
D.成本较低