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【判断题】
在 Windows 7 中,对话框窗口、应用程序窗口、文档窗口都可任意移动和改变大小。A.
正确
B.
错误
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举一反三
【简答题】A heat exchanger allows a hot fluid to transfer heat energy to a cooler fluid through ______________ and _______________ . A heat exchanger provides heating or cooling to a process.
【单选题】The general purpose of a heat exchanger is to _____.
A.
eliminate hot air from the condenser
B.
maintain steady pressure in a system
C.
heat, or cool one fluid by means of another fluid
D.
reduce the engine room temperature in tropical climates
【单选题】The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will （）.
A.
remain constant along the tubes length
B.
be greatest in a single pass counter flow heat exchanger
C.
remain constant throughout the heat exchanger
D.
vary from section to section through out the heat exchanger
【单选题】第二组 The only attention that heat exchanger should require is to ensure that the heat transfer surfaces remain substantially clean and the flow passages generally clear of obstruction. Indication that ...
A.
the heat exchanger lube oil inlet temperature lowering
B.
the heat exchanger sea-water outlet pressure rise
C.
the heat exchanger temperature difference between lube oil and sea water increasing
D.
the heat exchanger pressure difference between sea water inlet and outlet decreasing
【简答题】heat exchanger
【单选题】According to the passage, it is recommended that the heat exchanger side be cleaned by .
A.
flushing with chemical solvent without being dismantled
B.
brushing mechanically after being disassembled
C.
flushing with flesh water only
D.
flushing with clean oil only
【单选题】The type of heat exchanger that involves the alternate passage of the hot and cold fluid streams through the same flow area is the heat exchanger.
A.
regenerative
B.
compact
C.
plate and frame
D.
shell-and-tube
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