单项选择题
Remote control means that the system is being controlled by the operator who is situated （） from the system.
A.automatic B.local C.remote D.manual
单项选择题 Put in the engine turning gear Now examine thoroughly inside the crankcase to （） that everything is correct.
单项选择题 Pumps and fine filters are arranged （） with one as standby.
单项选择题 Please draw out a 0l mm shim between the two halves of the bearing （） the clearance.
