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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】YZW电缆用途为（ ）。
A.
敷设在无机械外力作用的户内电缆沟及管子中
B.
敷设在有侵蚀性介质、无机械外力作用的户内电缆沟道及管子中
C.
敷设在地下或电缆沟道中能承受机械外力作用，但不能承受大的拉力
D.
连接各种移动式电气设备，能承受较大机械拉力，还具有耐严酷气候和一定的耐油性能
【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