问题
问答题 简答题
钻孔孔距的一般控制方法有哪些？
答案
参考答案：
钻孔孔距的控制方法有：1）划线找正钻孔法。2）使用普通夹具配合简易钻模钻孔法。3）使用钻模钻孔法。
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钻孔孔距的一般控制方法有哪些？
参考答案：
钻孔孔距的控制方法有：1）划线找正钻孔法。2）使用普通夹具配合简易钻模钻孔法。3）使用钻模钻孔法。
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| China has decided to take action to stop the use of free plastic bags. Supermarkets, shops and outlets (经销点) in China will not be allowed to offer plastic bags. Every year, people use too many plastic bags and fail to deal with them in a right way, wasting the oil and littering the country. While we offer quick and useful service to customers, the plastic bags cause serious pollution and waste of energy as well. The government encourages people to go back to carrying cloth bags and using baskets for their vegetables.
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