4in油管的外径为（）。

[单选题]4in=()A . (A)100m;B . (B)101.6m;C . (C)0.1m;D . (D)0.1016m

[单选题]KGD油管堵塞器外径为（）。A .80mmB .90mmC .100mmD .110mm

[单选题]3/4in以内钢丝绳卡数为（）。A .3B .4C .5D .2

[单选题]3/4in以内钢丝绳卡距为（）。A .80～160mmB .80～120mmC .80～110mmD .90～110mm

[主观题]下外径为φ88.9mm油管所用油管规直径为75mm。此题为判断题(对，错)。

[判断题] 下外径为φ88.9mm油管所用油管规直径为75mm。A . 正确B . 错误

[单选题]下外径为φ73mm油管，其油管规直径为（），油管规长度不少于800mm。A．58mmB．59mmC．59.5mmD．60mm

[单选题]下外径为φ73mm油管，其油管规直径为（），油管规长度不少于800mm。A .58mmB .59mmC .59.5mmD .60mm

[单选题]2UPTBG油管加厚部分的外径φ为（）mm。A . 78.6B . 82C . 85D . 87.6

[单选题]Text 4In 1960—1961, Chad (乍得) harvested 98,000 tons of cotton for the first time in its history, and put out the flag a little too soon. The efforts of the authorities to get the peasants ' back' to work, as they had slacked off a great deal the pr