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telephoned rang visited saw
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I Δ＞ 30mA，TΔ=0.1s I Δ=30mA，TΔ＞ 0.1s I Δ＞ 30mA，TΔ＞ 0.1s I Δ＞ 30mA，TΔ＞ 0.1s.I Δ?TΔ≤ 30mA?s
IΔ>30mA，TΔ=0.1S IΔ=30mA，TΔ>0.1 IΔ>30mA，TΔ>0.1S IΔ>30mA，TΔ>0.1S，IΔ·TΔ≯30mA·0.1S
had telephoned would telephone would have telephoned telephone
) message ) advice ) information ) paper
I△＞30MA，T△=0.1S I△＞30MA，T△=0.1S I△＞300MA，T△=0.1S I△＞300MA，T△＞0.1S，I△·T△≯30MA·0.1S
where is the railway station how I can get to the railway station whether I can get to the railway station what could I do to get to the railway station
how can I get to the new bus station how I can get to the new bus station where is the new bus station how is the new bus station
when can I get to the station. how can I get to the station how to get to the station which station can I get to
MA＝PhI2/I1 MA＝Ph MA＝2PhI2/I1 MA＝2Ph
how can I get to the Beijing Railway Station how I can get to the Beijing Railway Station where can I get to the Beijing Railway Station whether can I get to the Beijing Railway Station
telephoned rang visited saw
I△ >30 mA ， T△ =0.1s I △=30 mA ， T△>0.1s I △>30 mA ， T△>0.1s I△ >30 mA ， T△ >0.1s，I△·T △≤30 mA · s
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