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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】There are approximately three quarters of a ton of termites (白蚁) for every person on Earth. It now turns out that these critters may be helping to alter the climate and affect man’s life. For years sc...
A.
It is the production by termites that is now of greater concern.
B.
What scientists worry more about is the output from burning fuels.
C.
The output from burning fuels is now rising steadily.
D.
The burning of fuels generates much less carbon dioxide than termites do.
【单选题】使用命令[t,x,y1,y2,,yn]=sim(model,timespan,options,ut);其中y1,y2,,yn返回的是什么?
A.
系统仿真时间向量。
B.
系统仿真状态变量矩阵。
C.
系统仿真的输出矩阵。
D.
多个系统仿真的输出。
【单选题】There are approximately three quarters of a ton of termites (白蚁) for every person on Earth. It now turns out that these critters may be helping to alter the climate and affect man's life. For years sc...
A.
low temperatures are created by using a house
B.
the house is made green in order to keep heat
C.
heat is prevented from escaping outside
D.
everything is kept green in a house