检查刮板链松紧程度的最简单方法是点动机尾电机,拉紧底链。
A. 正确
B. 错误
The biggest problem you generally encounter while towing a single tow astern is().
A. the catenary dragging on the bottom
B. swamping of the tow
C. the tow tending to dive
D. yaw
哮病辨肺脾肾虚损时,有自汗畏风,少气乏力,极易感冒症状者,辨证为()
A. 肺虚
B. 肾虚
C. 气虚
D. 血虚
E. 脾虚