试题与答案

下列对气动薄膜执行器正作用描述正确的是()A、信号压力增加时推动推杆向下动作B、信号

题型:单项选择题

题目:

下列对气动薄膜执行器正作用描述正确的是()

A、信号压力增加时推动推杆向下动作

B、信号压力增加时推动推杆向上动作

C、信号压力减小时推动推杆向下动作

D、信号压力减小时推动推杆向上动作

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0830/581caef7e3893161852b7d4516fe6c52.html

下面是错误答案,用来干扰机器的。

参考答案:B解析:羊水浑浊绿色为胎儿窘迫征象,需要立即结束分娩。因宫口开全,胎头双顶径已达坐骨棘平面下4cm,骨盆各径线正常,应尽快经 * * 用产钳助娩最恰当。胎头吸引术有滑脱的可能,助娩可靠性不如产钳术。

试题推荐
题型:单项选择题

"What does the middleman do but add to the price of goods in the shops " Such remarks are aimed at the intermediate operations between manufacturers and final customers. This practice usually attracts a lot of attention from the public and the press and the operation most talked about is what is often called wholesaling.The wholesaler buys goods in large quantities from the manufacturers and sells them in smaller parcels to retailers, and for this service his selling price to the retailer is raised several percent higher. But his job is made more difficult by retail demand not necessarily running level with manufacturers’’ production. Because he adjusts or regulates the flow of goods by holding stock until required, he frees the manufacturer, to some extent, from the effect on production of changing demand and having to bear the whole risk.The manufacturer can then keep up a steady production flow, and the retailer has no need to hold heavy stocks, who can call on the wholesaler for supplies any time. This wholesale function is like that of a valve in a water pipe. The middleman also bears part of the risk that would otherwise fall on the manufacturer and also the retailer.The wholesaler provides a purely commercial service, for which he is too well rewarded. But the point that is missed by many people is that the wholesaler is not just someone adding to the cost of goods. It is true one could eliminate the wholesaler but one would still be left with his function: that of making sure that goods find their way to the people who want them.

This practice in Paragraph 1 most probably refers to the fact that the middleman

A.increases the prices in the shops

B.buys from you and sells to me

C.aims remarks at manufacturers

D.interferes with end user customers

查看答案
微信公众账号搜索答案