设Ha=15.032m,Hb=14.729m,hba=( )m。A.-29.76

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问题 设Ha=15.032m,Hb=14.729m,hba=( )m。A.-29.761B.-0.303C.0.303D.29.761

选项 A.-29.761
B.-0.303
C.0.303
D.29.761

答案 B

解析 14.729-15.032=-0.303
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