The cylinder cover is not provided with （）.
举一反三
- On the top of the cylinder is mounted the cylinder cover which is pressed onto （） of the cylinder liner by means of nuts and studs.
- In each cylinder cover there are two or three holes for （）
- A-frames are mounted on the bed plate and support （） and cylinder block. A: the main bearing B: the cylinder cover C: the entablature D: the sum
- A-frames are mounted on the bed plate and support ________<br/>and cylinder block. A: the main bearing B: the cylinder cover C: the entablature D: the sump
- （） device is provided to prevent starting air from being admitted to the cylinder before the reversing is completed.