1Ѓɵ،Ӯaͬ|rBm(x)@N|F(xin)Q(A )
A.ƽв
B.ǶȲ
C.ٽǶȲ
D.
2ijӵͶȲһֵ(C)
A.100%
B. 0%
C. 150%
D. 50%
2020r̎ԇ}졪WУn | ||
ԇ} | 2020r̎ԇ} | ھ} |
WУn |
2020r̎俼ָ+cv+v} |
ھԇ |
3Ұȡ44.60gĝwe24 cm3ƾȼQ31.50gt京ˮʺܶȞ( A C )
A.41.6%
B. 29.4%
C. 1.86 g/cm3
D. 1.31g/cm3
4ʮְԇҪ;Ǵ_ճģ(A)
A.Ȼˮ
B.`
C.׃ģ
D.܌
5ijӵܶ1.6 g/cm3,tضȲ(B)
A.17kN/m3
B. 15kN/m3
C. 18kN/m3
D. 16kN/m3
6VӲ( B)
A.Ξʯ
B.S
C.Lʯ
D.ʯӢ
7һˮ(wn)ˮγ(A )
A.ˮƽ
B.
C.e
D.б
8˜؞ԇČָ;(D)
A.؞;
B.N(sh);
C.؞;
D.˜؞(sh)
9ʩٶ^ػˮԲˮlrɲSx(A)YӋ㿹
A.̽Yˮԇ;
B.̽Yˮԇ;
C.̽Yˮԇ;
D.̽Yˮԇ
10ػ_ȫƉĕrСQ(C)
A.Rܺd
B.Ժd
C.Od
D.