在无氧或氧供应不足情况下,机体的供能系统是()
A.有氧系统
B.磷酸原系统
C.CP系统
D.无氧系统
参考答案:D
When I first came to this country, I thought little that I should stay here so long.
A.little thought
B.thought never
C.a little thought
D.thought a little
轴承油压保护是防止()油压过()的保护装贸。