具有动力装置、制导系统、战斗部的武器就是导弹。
参考答案:错
The old man, _______ abroad for twenty years, is on the way back to his motherland.
A.to work
B.working
C.to have worked
D.having worked
工程建设定额按( )分类方式,可以分为施工定额、预算定额、概算定额、投资估算指标等。
A.定额反映的生产要素消耗内容
B.定额的编制程序和用途
C.投资的费用性质
D.专业性质