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【单选题】
水泥的体积安定性是指水泥在凝结硬化过程中( )的性质。A.
产生高密实度
B.
体积变化均匀
C.
不变形
D.
体积收缩
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【多选题】Space remote sensing is based on the remote sensing of (_______)
A.
man-made earth satellite
B.
space shuttle
C.
spacecraft
D.
aircraft operating in space
【简答题】我国Internet的起步以1987年通过中国学术网(CANET)向世界发出第一封()为标志。
【单选题】In respect to the type of energy resources, the types of remote sensing can be divided into _________ remote sensing and __________ remote sensing.
A.
thermal; microwave
B.
thermal; radar
C.
microwave; radar
D.
passive; active
【单选题】In respect to wavelength regions, remote sensing can be classified into three types. They are visible and reflective infrared remote sensing,______________infrared remote sensing and remote sensing
A.
thermal; microwave
B.
thermal; radar
C.
microwave; radio
D.
radar; radio
【简答题】阅读理解 In recent years, remote-sensing technologies have become ordinary in archaeological fieldwork (实 地考察). Such tools for excavation produce rapid results and cause no damage to archaeological sites....
【简答题】In respect to the type of energy resources,the types of remote sensing can be divided into ______ remote sensing and _________ remote sensing.
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