根据装配结构的具体情况和零件之间的连接关系,按( )、先内后外、( )、( )、先精密后一般的原则去确定其他零件或组件的装配顺序。
1,When people have winter swimming , the air temperature should be below 10 degrees celsius andthe water temperature below _____ degrees celsius.
A. 16
B. 17
C. 14
D. 15
2,Lao Jin' s winter swimming team has existed for ________ years.
A. 30
B. 25
C. 20
D. 35
3,Lao Jin has been practising winter swimming for about _________ years.
A. 26
B. 25
C. 23
D. 24