单项选择题
当路面温度为T(℃)时测得的摆值BPN应按式()换算成标准温度20℃的值BPN20。()
A.BPN20=BPNT -△BPN
B.BPN20=BPNT+△BPN
C.BPN20=BPNT×△BPN
D.BPN20=BPNT+2△BPN
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单项选择题
A.BPN20=BPNT -△BPN
B.BPN20=BPNT+△BPN
C.BPN20=BPNT×△BPN
D.BPN20=BPNT+2△BPN
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