第2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
第6题
A.domestic
B.strain
C.purchase
D.murder
第8题
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
第9题
A、tension
B、strain
C、stress
D、intensity
第10题
International ______ should be reduced when this agreement is signed.
A. pressure B. nervousness
C. tension D. strain
第11题
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