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更多“cell-free system”相关的问题
A.Advanced Input Output System
B.Basic Input Output System
C.Classic Input Output System
D.Junior Input Output System
Why is the present education system criticized according to the passage？
A．Because the examination system is not fine.
B．Because it is too examination-oriented.
C．Because the examination system is not scientific.
D．Because the examination system is out of date.
A.Integrated System
B.Inter-domain System
C.Intermediate System
D.Internet System
One advantage of the space-based solar power system is that it is economical．
A．Right
B．Wrong
C．Not mentioned
Legislation that built a national highway system was not signed until the 1950s.
A．Y
B．N
C．NG
According to paragraph 4, the Earth system as a whole is a closed system because
A．the Earth receives no energy from outside the system boundary
B．the boundary of the Earth system is clearly defined
C．no mass crosses the system boundary, but some energy does
D．the Earth system uses energy from solar radiation to support life
The system will be cancelled when you use the key to open the back door.
A．Y
B．N
C．NG
