传动轴两端采用十字型万向接头,其两万向接头之叉轭安排在同一平面上,其目的为()
A.变成不等速运转
B.使传动能得到更大的扭力
C.可变成等速运转
D.使伸缩容易
参考答案:C
选择正确的词语填空。
1. Mittens and __________ (mitt, mitts) are the same.
2. There are four __________ (season, seasons) in a year.
3. Many __________ (people, peoples) say he was Jesus.
4. We are __________ (arrive, going to arrive) tomorrow.
5. He is __________ (taking off, put on) his hat.
风险管理的损后目标包括()。
A.经济目标
B.生存目标
C.安全系数目标
D.收益稳定目标
E.持续经营目标