单项选择题
A.5%~70% B.10%~70% C.5%~75% D.10%~75%
A.t=T+273.15 B.t=T-273.15 C.t=T-275.13 D.t=T+275.13
A.0.02~0.1 B.0.04~0.1 C.0.02~0.2 D.0.04~0.2
A.1:5 B.1:8 C.1:10 D.1:12
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