單項選擇題

A condenser is a vessel in which（） is deprived of its latent heat of vaporization and so changed to its liquid state.

A.sea water
B.fresh water
C.vapour
D.gas

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單項選擇題

In more recent years, （） heat exchangers have frequently been employed for jacket water and oil cooling.

A.shell and tube type
B.plate type
C.coil type
D.conical disc type

單項選擇題

To avoid impingement attack, care must be taken with the water （） through the tubes of the heat exchangers.

A.temperature
B.velocity
C.density
D.viscosity