“承力索无载弛度曲线”反映了()。
A.承力索张力与温度的关系
B.承力索弛度与张力的关系
C.跨距长度与温度的关系
D.承力索张力与温度的关系
参考答案:D
Working as a fireman is demanding, which ________ responding to emergency situations, rescuing
lives and protecting properties from all types of accidents. [ ]
A. involves
B. concludes
C. admits
D. claims
以下哪一项的满足不属于幸福的范畴?()
A、需要
B、手段
C、欲望
D、目的