單項(xiàng)選擇題
A.硝銨 B.梯恩梯 C.銨梯 D.雷汞
A.給氣不沖擊 B.沖擊無(wú)力 C.沖擊時(shí)大時(shí)小 D.以上都不對(duì)
A.10-15mm B.15-20mm C.20-25mm D.15-25mm
A.100h B.200h C.500h D.1000h
A.0.07-0.15Mpa B.0.15-0.21Mpa C.0.15-0.7Mpa D.0.015-0.07Mpa
A.0.07MPa B.0.7Mpa C.0.15Mpa D.0.015Mpa
A.13 B.16 C.19 D.21
A.0.07-0.15Mpa B.0.7-0.15Mpa C.0.10-0.7Mpa D.0.05-0.07MPa
A.12.5Mpa B.8Mpa C.0.8MPa D.以上答案均不對(duì)