【简答题】The meeting would have clear______.Just me, no U.S. reporters, for 30 minutes.We would discuss science and the economy, not politics.Some topics were______for the Premier, suggested as more______ for ...
【单选题】由平行移轴公式能够得出,图示截面对x轴惯性矩Ix与对xc轴惯性矩Ixc的大小关系为( )。【图片】
【判断题】生产社会化的水平决定了正确的所有制形式。()
【判断题】No x-ray machines or body scanners such as you find at the entrance to the U.S. Capitol and the White House. 英译汉是否正确: 不像美国国会大厦和白宫,这里没有 X 光机,也没有人体扫描仪。
【单选题】某新建桥梁上部结构为多跨装配式T梁,跨越水库,最大水深约1m,采用以下哪种方法架梁较为合理( )
【单选题】谁提出了“商品天生是个平等派”这一观点?()
【单选题】No X-ray or body scanners such as you find at the entrance to the U.S. Capitol and the White House. (Para. 2)
A.
There were no x-ray machines or body scanners like the ones you find at the entrance to the U.S. Capitol and the White House.
B.
No x-ray machines or body scanners here were like the ones you find at the entrance to the U.S. Capitol and the White House.
【单选题】下列论述中正确的是
A.
在平行移轴公式I y =I y ’ +a 2 A, I z =I z ’ +b 2 A 中,a和b分别为任意两对平行轴y与y ’ 和z与z ’ 之间的距离;
B.
由平行移轴公式可知,图形对形心轴的惯性矩和惯性积的数值是所有平行轴中的最小者;
C.
图形对过同一原点任意一对正交坐标轴的两个轴惯性矩之和为一常量;
D.
若图形对某一对正交轴的惯性矩相等,则图形对过同一坐标原点的任意一轴惯性矩也必定相等;
【单选题】由惯性矩的平行移轴公式,如图所示, I z2 的答案为 ( )