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
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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
The Han nationality, the largest group, makes up about ____________ of China's vast population.
A. 91.51%
B. 98.51%
C. 80.25%
D. 75.26
国产95式步枪研制时选定制造材料的性质是()材料。
A. 热塑性
B. 热固性
C. 聚氨酯
D. 以上都不是