中暑痉挛()。
A.肌肉松弛
B.肌肉痉挛
C.肌束颤动
D.肌肉运动不协调
E.四肢肌肉、关节僵硬
参考答案:B
We have fulfilled promise we made to the world: The Beijing Olympic Games would be green
sports event.[ ]
A. the; the
B. a; a
C. the;/
D. the; a
支座对构件的反作用力后支座反力,也叫约束力。支座反力是由荷载引起的,因而是主动力。( )