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单选题
A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?（）
A
The tank is safe to enter
B
The tank is especially dangerous to enter
C
Carbon monoxide is present
D
Water vapor present when the tank was sealed has oxidized
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更多 “单选题A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?（）A The tank is safe to enterB The tank is especially dangerous to enterC Carbon monoxide is presentD Water vapor present when the tank was sealed has oxidized” 相关考题
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A tank has been sealed and unventilated(不通风的) for a long period of time. Which of the following conditions does this indicate?A.The tank is safe to enterB.The tank is especially dangerous to enterC.Carbon monoxide(一氧化物) is presentD.Water vapor present when the tank was sealed has oxidized(使氧化)
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单选题A rectangular fish tank has a base 2 feet wide and 3 feet long. When the tank is partially filled with water, a solid cube with an edge length of 1 foot is placed in the tank. If no overflow of water from the tank is assumed, by how many inches will the level of the water in the tank rise when the cube becomes completely submerged?A
1/6B
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2D
3E
4
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