If a diesel engine rotates slowly when cranked, but does not fire, the()
A. fuel control rack had admitted excessive fuel
B. engine speed does not match the fuel rack setting
C. engine has failed to reach its firing speed
D. starter pinion and ring gear contact is not correct
Which of the valves listed is NOT considered to be a hydraulic system directional control valve?()
A. Spring-centered valve
B. Unloading valve
C. Three-position valve
D. Two-position valve
中国航油集团向中航油董事会派驻了4名成员,包括陈久霖本人,而他也是以集团副总经理的身份兼任中航油董事和执行总裁。但事实上,集团公司处于对陈久霖的信任,使他在实质上成为了集团公司派驻中航油的全权代表和实际监管者。同时,在起任职期间,曾两度调开集团公司派驻的财务经理,从当地另聘财务经理,只听命于他一人。由此可见,该公司内部控制的()环节存在重大缺陷。
A. 风险评估
B. 信息系统与沟通
C. 控制环境
D. 控制活动