光缆型号中,适用温度的代号A适用的温度范围为()
A.40--+40℃
B.30--+50℃
C.20--+60℃
D.5--60℃
参考答案:A
Every means _____ prevent the water from _____.
A.are used to; polluting
B.will be used to; polluting
C.is used to; polluted
D.is used to; being polluted
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