水分能促使润滑油氧化，同时对轴承润滑不利，当水分达到（）以上时，要进行去水。
A.0.1%
B.0.5%
C.1.0%
D.1.5%
参考答案：A
One of the climbers tried to pull ______up the rocks. Finally, he was lucky to get to the top. [ ]
A. themselves
B. himself
C. herself
D. itself
孙子兵法
f the climbers tried to pull ______up the rocks. Finally, he was lucky to get to the top. [ ]