A.0
B.7.64
C.10
D.12
[单选题]A.0B.7.64C.10D.12
[单选题]A.l=3λ/2,Δφ=3πB.l=3λ/(2n),Δφ=3nπC.l=3λ/(2π),Δφ=3πD.l=3nλ/2,△φ=3nπ
[单选题]A.l=3λ/2,Δφ=3πB.l=3λ/(2n),Δφ=3nπC.l=3λ/(2π),Δφ=3πD.l=3nλ/2,△φ=3nπ
[单选题]A.1B.0.5C.5D.2
[单选题]A.1B.0.5C.5D.2
[单选题]A.5.33B.5.69C.6.29D.6.59
[单选题]A.5.33B.5.69C.6.29D.6.59
[单选题]A.3.7mg/LB.6.5mg/LC.8.4mg/LD.10.5mg/L