刘鼎发现太行山根据地的军工厂存在下列哪些问题?()
A. 生产方式原始落后
B. 工人知识水平低
C. 生产工艺差距大
D. 用料浪费严重
刘鼎对研制适合我军战斗特点的新型步枪提出了哪些要求?()
A. 制式化
B. 射程达500米
C. 重量要轻
D. 枪管不能太长
The one-child policy was adopted in China since _________.
A. the late 1970s.
B. the early 1970s.
C. the late 1980s.
D. the early 1980s.
_____________ is the supreme organ of state power.
A. The CPPCC
B. The NPC
C. The PRC
D. The CPC