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更多“HY£20G山地钻机结构形式()。”相关的问题
第5题
ZJ45J钻机额定柱重量为160吨，固定部件自重10吨游系采用5*6结构，游系效率为0.85，最大井深时匀速起钻死绳拉力约为（)
A.20.5吨
B.14.5吨
C.205吨
D.205kg
第7题
目前，国内生产的滑轮组有三种标准系列：HQ系列(ZBJ80008-87)、H系列(JB1204-71)和HY系列(林业滑
目前，国内生产的滑轮组有三种标准系列：HQ系列（ZBJ80008-87)、H系列（JB1204-71)和HY系列（林业滑
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轮组)，吊装工程一般采用______和______滑轮组。
第8题
分析铜锌合金.称取0.5000g试样,用容量瓶配成100.0mL试液.吸取该溶液25.00mL,调至pH=6.0,以PAN
作指示剂,用c(HY)=0.05000mol·L-1的溶液滴定Cu2+和Zn2+,用去37.30mL.另外又吸取25.00mL试液,调至pH=10.0,加KCN掩敞Cu2+和Zn2+用同浓度的HY溶液滴定Mg2+,用去4.10mL.然后再加甲醛以解蔽Zn2+,又用同浓度的HY溶液滴定,用去13.40mL.计算试样中Cu2+,Zn2+和Mg2+的含量.
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第9题
People waiting at an airport______.A．enjoy hearing airplanes taking off and landingB．are u
People waiting at an airport______.
A．enjoy hearing airplanes taking off and landing
B．are usually not troubled hy the noise
C．can easily tell sound from noise
D．are often physically affected by the noise
第11题
What does the author most probably think about hypochondria？A．The author considers that hy
What does the author most probably think about hypochondria？
A．The author considers that hypochondria is an incurable disease.
B．The author thinks that the consequences of hypochondria might be disastrous.
C．The author suggests that the patients who have hypochondria should set their hearts at rest.
D．The author sympathizes with the patients who suffer from hypochondria.
