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【单选题】
露出（）以上的礁石高度称为干出高度，即该碓石称为干出礁。
A.
水面
B.
当地基准面
C.
A、B都对
D.
A、B都不对
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】More artificial reefs (礁石) are being lowered into the ocean now than ever before. But as artificial-reef initiatives grow to include more coastal regions and a wider (62) of aged infrastructure(基础设施),...
A.
in
B.
on
C.
by
D.
with
【单选题】More artificial reefs (礁石) are being lowered into the ocean now than ever before. But as artificial-reef initiatives grow to include more coastal regions and a wider (62) of aged infrastructure(基础设施),...
A.
artificial
B.
superficial
C.
special
D.
beneficial
【单选题】干出礁是指_____________。
A.
平均大潮高潮时露出的孤立岩石
B.
平均大潮高潮面下,深度基准面以上的孤立岩石
C.
深度基准面适淹的礁石
D.
深度基准面以下的孤立岩石