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【多选题】
我在波涛汹涌的水面上游泳时,蛙鞋带松脱了(后来发现是我没有扣好)。以下哪一种习惯有助于处理这类问题?
A.
随时戴着面镜,保持咬嘴在嘴中。
B.
在浮力调整装置中保有足够的空气以维持适当浮力。
C.
和潜伴保持在一起并伴比出手势。
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The great speed at which the ship moves.
B.
The way the ship cuts through the water.
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The fact that the ship clips time off the trip.
D.
The use of the word in an early newspaper edition.
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A.
乙醇,75%
B.
来苏儿,10%
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D.
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A.
L=6,K=8,f(6,8)=64
B.
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C.
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D.
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