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单选题
Stainless steel is material commonly used for temperatures up to 50℃; beyond that and for severe corrosive conditions other materials are requiredThe bold and italic word “that” probably means （）.
A
stainless steel
B
temperature
C
50℃
D
other materials
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考题
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单选题Stainless steel is material commonly used for temperatures up to 50℃; beyond that and for severe corrosive conditions other materials are requiredThe bold and italic word “that” probably means （）.A
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单选题As time goes on the organic material is buried deeper and hence（）higher temperatures and pressures.A
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