"A manual depressurization valve installed in the line to each main hydraulic system reservoir." the above sentence means "在通向各主液压系统液压油箱的导管里装有一个人工减压活门".
A.1正确答案A
"A manual depressurization valve installed in the line to each main hydraulic system reservoir." the above sentence means "在通向各主液压系统液压油箱的导管里装有一个人工减压活门".
A.1正确答案A