矿物基液压油主要用于减震支柱，通常染成（）。
A.红色
B.紫色
C.绿色
D.琥珀色
参考答案：A
Clinical evidence began to _____, suggesting that the new drugs had a wider range of useful activities than
had been predicted from experiments in animals. [ ]
A. operate
B. strengthen
C. approve
D. accumulate
仲裁裁决的效力
