A.stand by
B.put up with
C.withhold
D.withstand
第1题
Highspeed aircraft is made of metals that can ____ both high tempe rature and pressure.
A.stand by B.put up with C.withhold D.withstand
第2题
A.engine overload
B.low combustion temperature
C.plugged fuel nozzle holes
D.excessive compression pressure
第3题
A.Both seamless mild steel and copper may be used for middle pressure steam
B."hpair" means high pressure air
C.The feed piping of the boilers can be made of seamless mild steel
D.All oil pipings are made of mild steel
第4题
A.first stage
B.second stage
C.distillate cooler
D.salt water feed heater
第5题
B.condenser
C.evaporator
D.expansion valve
第6题
A.temperature and pressure
B.humidity and temperature
C.pressure and vacuum
D.pressure and humidity
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