【单选题】下列选项中, .gov 是用于哪一类别?
【单选题】According to Annex V to MARPOL 73/78,garbage containing plastic is permitted to be disposed of by ______.
B.
discharging when at least 12 nautical miles from nearest land
C.
grinding to less than 1 and discharging at least 12 nautical miles from nearest land
D.
grinding to less than 1 and discharging at least 25 nautical miles from nearest land
【单选题】在家用血糖仪中,强生、罗氏、欧姆龙、怡诚等提供产品功能相同的血糖诊断仪器,开展市场竞争,这种竞争是
【简答题】用三线摆测刚体转动惯量时,为什么必须保持下圆盘水平 ?
【多选题】在碘量法中为减少I2的的挥发,常采用的措施有
【简答题】关于基于协作知识建构的教学模式,教材第156-157上共有三个图8-3、8-4、8-5分别是概念性问题、解释性问题、设计性问题的知识建构模式,请指出它们有什么相同点与不同点?
【简答题】518÷37=14,518÷(37×2)=( ),(518×2)÷37=( )