题目
A.0.005~0.01
B.0.05~0.1
C.0.002~0.003
D.0.02~0.03
第3题
A.供水干管的坡向要求相同,回水干管的坡向要求相同
B.供水干管的坡向要求不相同,回水干管的坡向要求相同
C.供水干管的坡向要求相同,回水干管的坡向要求不相同
D.供水干管的坡向要求不相同,回水干管的坡向要求不相同
第7题
A.0.003,0.002
B.0.004,0.003
C.0.005,0.002
D.0.006,0.004
第8题
A.0.003,0.002
B.0.004,0.003
C.0.005,0.002
D.0.006,0.004
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