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【判断题】
There is only energy change for a closed system.
A.
正确
B.
错误
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】There are three types of compass, namely (), all of which belong to the invention of China.
A.
A. magnetic compass (Luopan)
B.
B. magnetic needle compass (Cizhen)
C.
C. magnetic pole (Ci Ji)
D.
D. lodestone compass (Sinan)
【单选题】The Soviet Union started a scientific drilling in () in the area near the Norwegian border in the Kola Peninsula. The deepest hole it made reached 12,263 meters in 1989.
A.
A. 1960
B.
B. 1970
C.
C. 1980
D.
D. 1990
【单选题】The boundary between the earth’s mantle and core is called Gutenberg Discontinuity, which was discovered in 1914 by Beno Gutenberg, a member of the () Geophysical Union.
A.
A. Soviet Union
B.
B. German
C.
C. British
D.
D. American
【单选题】The crust and the covering strata of the upper mantle above the asthenosphere are composed of rigid rocks, called ().
A.
A. lithoshpere
B.
B. biosphere
C.
C. atmosphere
D.
D. asthenosphere
【单选题】The breathing method used in Chen tai Chi is ().
A.
Abdominal breathing
B.
Chest breathing
C.
Mixed breath
D.
Stop breathing