机床的静态精度必须是在机床不运动的情况下检测的精度。( )
A. 对
B. 错
Passage Two Questions 30 to 32 are based on the passage you have just heard.
A. They use first the eyes, then the brain and finally the muscles.
B. They make the eyes, brain and muscles work almost at the same time.
C. They use mainly the arms and legs to hit.
D. They use mainly the muscles so that the ball is met and hit back.
Questions 22 to 25 are based on the conversation you have just heard.
A. His childhood.
B. His work.
C. His love for his child.
D. His advice.
该有两个血清型HSV1和HSV2
A. 单纯疱疹病毒
B. 巨细胞病毒
C. 丙型肝炎病毒
D. 乙型肝炎病毒
EB病毒
微信支付 
支付宝支付