主页
学科
搜索
账户
常见问题
当前学科:钻探工
题目:
单选题
观察游车各滑轮转动情况,要求转动灵活,无()现象。
A
阻卡和偏磨
B
打滑
C
阻卡
D
摆动
答案:
<查看本题扣1积分>
查看答案
答案不对?请尝试站内搜索
推荐知识点:
证券投资咨询业务可进一步细分为面向公众的投资咨询业务,为签订了咨询服务合同的特定对象提供的证券投资咨询业务两类。()
穿山甲与王不留行的共同功效是()。
没有足够的、充足的信息必然会影响沟通。()
清热解毒药中,常用治热毒血痢便脓血的药物是()。
CISC machine instructions compared with RISC machine are__________
Dear Sir, We are a leading dealer in waterproof garments. Our customers have expressed interest in your raincoats and enquired about their quality. Provided quality and price are satisfactory there are prospects of good sales here, but before placing a firm order we want to make a trial salE.We should be glad if you would send us, on fourteen day's approval, a selection of men's and women's raincoats. Any of the items unsold at the end of the period, and which we decide not to keep as stock, would be returned at our expense. We look forward to hearing from you soon. Yours sincerely,
()是接触悬挂中与受电弓直接接触的部分,通过接触线向电力机车输送电能,是接触悬挂最为重要的导线。
不确定性分析的主要方法有()。
体内最重要的抗凝物质是()
距门齿18cm食管癌,左锁骨上可触及一直径1.5cm质硬淋巴结,其分期至少应为()