<strong id="yrfbc"><sup id="yrfbc"><thead id="yrfbc"></thead></sup></strong>

<table id="yrfbc"><menuitem id="yrfbc"><ins id="yrfbc"></ins></menuitem></table>

單項(xiàng)選擇題

In large marine diesel engines cylinder oils usually contain additives formulated to impart the （） to clean the rings and grooves.

A.inefficiency
B.oiliness
C.detergency
D.purity

你可能感興趣的試題

單項(xiàng)選擇題

In general, （） is suitable for delivering small quantities at high pressure.

A.reciprocating pump
B.gear pump
C.centrifugal pump
D.vane pump

單項(xiàng)選擇題

In four strokes engine, the cycle of events is completed in four strokes of （）.

A.the cylinder
B.the crankshaft
C.the piston
D.the cross-head

<samp id="zasgd"><listing id="zasgd"><dl id="zasgd"></dl></listing></samp>

<table id="zasgd"></table>