An (6) mobile phone battery.
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The last thing to remember is to (7) someone fully informed of your (8) plan
which may include your route, destination, the duration, your means of transport, etc. (9) people may (10) on your whereabouts if necessary.
(9) people may (10) on your whereabouts if necessary.
某厂房屋架的中间竖腹杆为双角钢十字截面,采用节点板与弦杆连接,几何长度l为6000mm。当按杆件的长细比选择截面时,计算长度l0取值为:
A. 6000mm
B. 5400mm
C. 4800mm