A.1
B.
C.
D.e
[单选题]A.该梁为少筋梁B.该粱为适筋梁C.受压钢筋过多D.该梁为超筋梁
[单选题]A.2M-NB.2M-3NC.3M-2ND.4M-NE.4M-2N
[单选题]A.2M-NB.2M-3NC.3M-2ND.4M-NE.4M-2N
[单选题]A.只有1条B.只有2条C.至少有3条D.不存在
[单选题]A.-lnaB.lnaC.D.1/2
[单选题]A.只有1条B.只有2条C.至少有3条D.不存在
[单选题]A.-lnaB.lnaC.D.1/2
[单选题]A.0B.1C.-1D.2E.-2
[单选题]A.条件(1)充分,但条件(2)不充分。B.条件(2)充分,但条件(1)不充分。C.条件(1)和条件(2)单独都不充分,但条件(1)和条件(2)联合起