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搜题
【单选题】
What do campaigners who lobby to preserve languages do to save endangered languages?A.
Take measures to slow down languages' vanishing rate.
B.
Try to make known languages' accelerating vanishing rate.
C.
Try all their out to record and reconstruct the vanishing languages.
D.
Slow down languages' vanishing rate and meanwhile make it known.
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】对于相对分子质量在 200-2000 的样品,宜采用 进行分离、分析。
【单选题】Generally, ______ are used as the track charts on the high seas, ______ are used for harbors, inland waters and coastal areas.
A.
Mercator charts / Loran charts
B.
Admiralty charts / Routeing charts
C.
large scale charts / small scale charts
D.
small scale charts / large scale charts