單項(xiàng)選擇題
A.95% B.80% C.100% D.90%
A.95% B.100% C.90% D.80%
A.1% B.5% C.3% D.2%
A.15米 B.20米 C.50米 D.10米
A.5mm B.10mm C.15mm D.8mm
A.5－10mm B.10－15mm C.5－15mm D.15－20mm
A.15mm B.10mm C.20mm D.25mm
A.300mm B.450mm C.400mm D.350mm
A.400N/m B.500N/m C.600N/m D.700N/m
A.1次 B.2次 C.3次 D.4次
A.0.5－1.0m/s，4m/s B.0.3－0.5m/s，2m/s C.0.3－0.5m/s，4m/s D.0.3－0.5m/s，3m/s
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