对于轴心受压的先张法预应力混凝土构件,预应力筋应同时放张。( )
参考答案:对
高血压肾功能不全的患者,不宜选用()
A.哌唑嗪
B.卡托普利
C.双氢克脲噻
D.β受体阻滞剂
E.硝苯地平
0f all the extinguishing agents listed below, which one has the greatest capacity for heat adsorption?().
A.Water fog
B.Carbon dioxide
C.Dry chemical
D.Solid stream of water