【简答题】What's the differences between the traditional theory, new-trade theory and new-new trade theory?
【单选题】A new theory __________ before it can be put into practice.
【单选题】Which theory emphasizes the significance of new discoveries that can be used by many people at the same time?
A.
neoclassical growth theory
C.
classical growth theory
D.
None of the above answers are correct.
【简答题】变压器异常运行状态主要包括:保护范围外部短路引起的过电流,电动机自起动等原因所引起的过负荷、油浸变压器油箱漏油造成油面降低、 轻微匝间短路等。( )
【单选题】The new theory wascorroborated.
【单选题】普氏野马重归自然的实验,标志着我国野生动物保护工作已经从单纯的物种异地保护阶段迈向物种回归自然阶段。有人预计,数年后,这些野马将发展成为一个野生种群。下列有关叙述正确的是()
B.
野外的普氏野马某些基因的频率将会发生定向变化
C.
野外的普氏野马有助于该生态系统恢复力稳定性的增强
D.
野外的普氏野马与圈养的普氏野马因环境不同而产生生殖隔离
【单选题】A new theory of the origin of language is the most ______ feature of the book.
【判断题】变压器异常运行状态主要包括:保护范围内部短路引起的过电流,电动机自起动等原因所引起的过负荷、油浸变压器油箱漏油造成油面降低。( )