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【简答题】
“风云”二号卫星发送回地面的红外云图是由卫星上设置的可以接收云层辐射的红外线的感应器完成的，云图上的黑白程度是由辐射红外线的云层的温度高低决定的，这是利用了红外线的（ ）
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【单选题】Even plants can run a fever, especially when they are under attack by insects or disease. But (71) humans, plants can have their temperature (72) from 3,000 feet away—straight up. A decade ago, (73) t...
A.
seeming
B.
clear
C.
apparent
D.
visible
【单选题】Even plants can run a fever, especially when they are under attack by insects or disease. But (71) humans, plants can have their temperature (72) from 3,000 feet away—straight up. A decade ago, (73) ...
A.
of
B.
in
C.
for
D.
on
【简答题】气象卫星向地面发送的云图，是由卫星上的红外线感应器接收云层发出的红外线而形成的图象，云图上的黑白程度由云层的温度高低决定，这是利用了红外线的（ ）
A.
化学作用
B.
热作用
C.
穿透性
D.
衍射性
【单选题】Even plants can run a fever, especially when they are under attack by insects or disease. But (71) humans, plants can have their temperature (72) from 3,000 feet away—straight up. A decade ago, (73) ...
A.
where
B.
which
C.
how
D.
when