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单项选择题
A.10s
B.15s
C.20s
D.30s
E.60s
单项选择题
A.19.5MPa
B.21.5MPa
C.23.5MPa
D.27.5MPa
单项选择题
A.105kPa
B.123kPa
C.146kPa
D.150kPa
单项选择题
A.0.35MPa
B.0.40MPa
C.0.45MPa
D.0.50MPa
单项选择题
A.0.10MPa
B.0.12MPa
C.0.14MPa
D.0.16MPa
单项选择题
A.2.5MPa
B.3.0MPa
C.3.2MPa
D.3.5MPa