steam turbine economic index-heat consumption rate, the correct
expression is ()
A: the
higher the heat consumption rate, the better the economy of steam
turbine
B: the
smaller the heat consumption rate, the smaller the turbine
manufacturing cost
C: the
heat consumption rate is the heat consumed by the 1 KW electric
energy of the turbine generator set
D: above
is wrong
举一反三
- Which indexes are economic indexes of Rankine Cycle ( ) A: Thermal efficiency B: Coal rate C: Heat rate D: Steam rate
- When large decrease in turbine load the steam from the steam generators is sent to the A: steam condenser B: atmosphere C: steam dump system D: heat exchanger
- How much do you choose to save ( ) A: There are more opportunity costs for future consumption B: It is the trade-off between current consumption and future<br/>consumption C: Because saving means more consumption in the future, there is no<br/>opportunity cost D: The above statements are not correct
- If an unemployed<br/>person quits looking for work, ceteris paribus, the unemployment rate<br/>() A: decreases, and<br/>the participation rate increases. B: decreases, and<br/>the participation rate decreases. C: stays the same,<br/>and the participation rate decreases. D: and the<br/>labor-force participation rate stay the same.
- Never()your<br/>laptop near heat A: leave B: leaving C: to<br/>leave
内容
- 0
For a gas turbine engine, Active Clearance Control (ACC) for turbine would : A: Reduce mechanical loss B: Reduce heat loss C: Reduce clearance loss
- 1
____<br/>is the isothermal heat treatment by which austenite transforms to<br/>bainite. A: Isothermal<br/>annealing B: Quenching C: Austempering D: Marquenching
- 2
Which of the<br/>following is a consumption asset?( ) A: The S&P 500<br/>index B: The Canadian<br/>dollar C: Copper D: IBM stock
- 3
In turning, the<br/>most cutting heat ()。 A: pass<br/>on the workpiece B: pass<br/>on the cutter C: pass<br/>on the machine tool D: take away by chip
- 4
A Carnot refrigerator is operated between two reservoirs and the cold<br/>reservoirs is at temperature of 270K. If in each cycle the<br/>refrigerator receives 415 J of heat energy from the reservoir at 270K<br/>and 77 J work is needed to be done on the working substance. The<br/>quantity of the heat energy delivered to the hot reservoir is (). A: 90J B: 338 J C: 492J D: 578J