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更多“species，strain”相关的问题
Elastic strain()
A．is strain thatpermanently remains,when the lvadcausing it is removed
B．occurs below the proportional limit
C．is also known as permammt deformation
D．none of the above
A.domestic
B.strain
C.purchase
D.murder
Strain()
A．occurs when a force is applied to a material
B．has units of Newtons／Newtons
C．occurs only at room temperature
D．all of the above
A、tension
B、strain
C、stress
D、intensity
A．they hate the constant pressure and strain of their study
B．they will then be able to stay longer in the university
C．such positions help them get better jobs
D．such positions are usually well-paid
Every year a lot of life species die ______.
A．out
B．away
C．of
D．from
A.A.vaporize metal atoms to be analyzed
B.B.cause the metal species to form carbides which are more volatile
C.C.convert the graphite furnace to ash to avoid carbide formation
D.D.burn off organic species that would interfere with the eletnental analysls
Why is it a problem if all the smaller fish species die？
A. It's not healthy for the environment.
B. People only like to catch big fish.
C. There are too many small fish.
D. The smaller fish can get lost in the lake.
