图示(a)(b)(c)三种荷载作用下,梁AB的支座反力为( )
- A、(a)A=m/l(↓)B=m/l(↑) (b) A=0 B=P (↑) (C)A=P/2(↑)B=P/2(↑)
- B、(a)A=m/l(↑)B=m/l(↑) (b) A= P (↑) B=0 (C)A=P/2(↓)B=P/2(↑)
- C、(a)A=m/l(↓)B=m/l(↓) (b) A=0 B=P (↑) (C)A=P/2(↑)B=P/2(↑)
- D、(a)A=m/l(↓)B=m/l(↑) (b) A=0 B=P (↑) (C)A=P/2(↓)B=P/2(↑)
答案:
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