财政分配的主要形式是()。 ["实物","价值","力役","其他形式"]
水泥应存入露天料场。
圆珠笔笔杆与笔芯的设计体现了抽取原理。
0n a crane ,the boom indicator tells the operator what angle the boom angle is compared to the(). ["vertical position","horizontal position","boom stop angle","minimum radius angle"]
用航拍照片代替实物或者实物系统的原理称为()。 ["替代","分离","嵌套","复制"]
试述成熟行业企业制定竞争战略必须考虑的问题。