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【单选题】
Suppose the economy is currently operating on both the LM curve and the IS curve. Which of the following is true for this economy?A.
Production equals demand.
B.
The quantity supplied of bonds equals the quantity demanded of bonds.
C.
The money supply equals money demand.
D.
Financial markets are in equilibrium.
E.
all of the above
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【简答题】某一套管换热器的内管为Æ165mm ́4.5mm的钢管,内管中热流体被冷却,热流体流量为3000kg·h-1,比热容为1.87kJ·kg-1·K-1,进、出口温度分别为90°C、60°C,环隙中冷却水进出口温度分别为20°C和45°C,水的比热容为4.187kJ·kg-1·K-1,水侧对流传热系数为2200W×m-2×K-1,总传热系数K为1600 W·m-2·K-1(以外表面为基准)。试求:
【单选题】When securing a flash-type evaporator for an extended period of time, you should _____.
A.
fill the unit with saltwater
B.
fill the unit with de-scaling compound
C.
completely drain the unit
D.
tightly seal the unit to exclude air
【简答题】Java的编译命令是 ( ) 备注:直接写编译命令的单词
【单选题】Which of the listed problems could produce a high absolute pressure within a flash type evaporator?
A.
production of high salinity distillate
B.
seawater feed temperature below 165℃
C.
a leak in the first stage demister
D.
a cracked distillate pump vent line
【单选题】passage four：questions 26～30 are based on the following passage. It came as something of a surprise when Diana, Princess of Wales, made a trip to Angola in 1997, to support the Red Cross’s campaign fo...
A.
to voice her support for a total ban of landmines
B.
to clarify the British government’s stand on landmines
C.
to investigate the sufferings of landmine victims there
D.
to establish her image as a friend of landmine victims
【简答题】As she came within ______of the group, she heard her name mentioned. (enrich, earsplitting, endure, earshot)
【单选题】When a flash-type evaporator is to be secured for an extended period of time, the entire unit should be drained, cleaned, and _____.
A.
completely filled with saltwater
B.
filled with de-scaling compound
C.
tightly closed to exclude air
D.
vented to the atmosphere
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