The ability of lubricating oils to resist viscosity changes during temperature changes is indicated by the ____.

A．American Petroleum

B．Institute number viscosity index number

C．Seconds Saybolt Furol number

D．Seconds Saybolt Universal number

[单选题]（） fuel oils （） lubricating oils require treatment before passing to the engine.A . Both；andB . Neither；norC . Either；orD . Both；or

[单选题]The development of oils （） the increasing demands made by the steady rise in powers produced by modem diesels.A . has kept pace withB . has kept pace toC . has made pace withD . has made pace to

[主观题]Please explain how we describe the resistance in semiconductor. Compare the resistance of a metal,poly and diffusion in tranditional CMOS process.（威盛笔试题circuit design-beijing-03.11.09）

[单选题]E．mulsion oils and sodium nitrite are both approved additives, but the latter cannot be used if any pipes are or if ally soldered joints exit.A．chromedB．weldedC．galvanizedD．bolted

[单选题]Emulsion oils and sodium nitrite are both approved additives, but （） cannot be used if any pipes are galvanized or if soldered joints exist.A . the latterB . latterC . formerD . the former

[单选题]The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in （） while that for latter one is （）.A . sufficient quantity； measuredB . measured quantity；sufficientC . excessive quantity；suff

[单选题]The function of a lubricating oil is （） to lubricate the running surface （） to carry away a great deal of heat.A . not；butB . neither；norC . either；orD . not only；but also

[单选题]With respect to the flow of lubricating oil through a diesel engine, the lube oil coolers are located after filters in order to （）.A . allow filtration of less viscous oilB . decrease the pressure drop across the filterC . improve overall filtrationD

[单选题]A．n additive used to improve the ability of a lube oil to reduce friction is known as a/anA．suppressant additiveB．dispersant additiveC．extreme pressure additiveD．viscosity improver additive

[单选题]It is the ability to do the job ______ matters not where you graduate from or what you are.A． thatB． itC． whatD． when