单项选择题
A.10-9-10-5 B.10-6-10-5mm C.10-8-10-6mm D.10-9-10-7mm
A.10-4mm以上 B.10-4-10-5mm C.10-5-10-6mm D.10-6-10-7mm
A.每周 B.每天 C.两周 D.每两天
A.0.01-0.02Mpa B.0.02-0.05Mpa C.0.08-0.1Mpa D.0.1-0.12Mpa
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