Excessive alkalinity of the water in an auxiliary boiler can cause （）.

[单选题]To prevent excessive __ in the transverse girders, the tie bolts are positioned as close to the center of the crankshaft as possibleA．thermal stressesB．bending momentsC．thermal loadsD．surface tensions

[单选题]To prevent excessive __ in the transverse girders, the tie bolts are positioned as close to the center of the crankshaft as possibleA．thermal stressesB．bending momentsC．thermal loadsD．surface tensions

[单选题]Excessive vibration of an automatically fired auxiliary boiler can be caused by （）A . air or water in the furnaceB . combustion pulsesC . fuel oil pump failureD . flame failure

[单选题]Excessive clearances in the main or crank-pin bearings will sometimes be indicated by （） before any bearing knock is heard.A . loss of flow in the fuel systemB . loss of pressure in the air systemC . loss of flow in the lubricating systemD . loss of

[单选题]E．xcessive oil foaming in the crankcase of a refrigeration compressor is most likely to occur when the compressorA．has run continuously for a long periodB．suction pressure is below normalC．oil level is below normalD．starts after a long idle period

[单选题]In a diesel engine, excessive cylinder liner wear will cause （）(1) increased blow-by(2) wear between the piston ring and grooveA . (1) only is correctB . (2) only is correctC . both (1) and (2) are correctD . neither (1) or (2) axe correct

[试题]C．anadian media often cite excessive fishing by overseas fleets, primarily because of ______.

[单选题]What effect does excessive positive ions have on some people?A．They think they are mad.B．They feel very tired.C．They become violently sick.D．They are too tired to do anything.

symptom excessive hesitant detection expend outbreak decrease

If a used lube oil analysis indicates an excessive chromate content, this means