单项选择题
Peter can't attend the party ______ at Tom's house at present because heis preparing for the speech at the party _____ at Mary's house tomorrow.
A.to
B.held;being
C.to
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单项选择题下面关于配筋砖砌体的说法哪种是正确的?
A、轴向力的偏心距超过规定限值时,宜采用网状配筋砖砌体;
B、网状配筋砖砌体抗压强度较无筋砌体提高的主要原因是由于砌体中配有钢筋,钢筋的强度较高,可与砌体共同承担压力;
C、网状配筋砖砌体,在轴向压力作用下,砖砌体纵向受压,钢筋弹性模量大,变形小,阻止砌体受压时横向变形的发展,间接提高了受压承载力;
D、网状配筋砖砌体的配筋率越大,砌体强度越高,应尽量增大配筋率
