练习耐力，还有什么好办法吗？
参考答案：力量素质、速度素质、灵敏素质、柔韧素质、耐力素质
All his friends’ encouragement _____ his confidence in winning the game.
A．added up to
B．added up
C．added to
D．added
10kV带电作业直接作业法，作业人员与地面作业人员传递工具和材料时，绝缘绳有效长度不得小于（）m。
A.0.6
B.0.7
C.0.4
D.1
