Diesel engine main and connecting rod precision bearings are made in halvesEach half exceeds one-half the bearing circumference by a small amountThe small amount is termed _____.
【简答题】Cloze Ancient Greek philosopher Aristotle viewed laughter as 'a bodily exercise precious to health.' Laughter does _ 1 _ short-term changes in cardiovascular(心血管的) function and respiration, boosting h...