会计是对经济活动的反映和监督，以（）为主要计量单位。 A.现金 B.货币 C.资金 发布时间：2018-02-01 05:11 │ 来源：www.tikuol.com 题型：单项选择题 问题： 会计是对经济活动的反映和监督，以（）为主要计量单位。A.现金B.货币C.资金D.资产
题型：单项选择题 对低温回收凝油工艺流程的特点叙述不正确的是（）A.利用高压天然气的节流制冷B.大幅度降低天然气的温度C.天然气的重烃成分呈液态凝析出来D.采用电脱盐技术将原料中的少量的盐和水脱除 查看答案
题型：单项选择题 任务型读写。 阅读下面短文，根据所读内容在表格中的空白处填入恰当的单词。 注意：每个空格只填一个单词。 From the beginning of human history, people have used oils from seeds and nuts. Most of the time these oils are used as food, especially in cooking. But sometimes they have other uses. For example, oils are usedin paint and in cleaning products like soap. Oil is separated from seeds by using pressure. A machine called a press is often used. The first step in pressing the oil from seeds is to crush the seeds between two stones. The crushed seeds are then put into a cloth bag and the bag is hung up. Some of the oil will flow out of the bag and can be collected. But some oil will remain in the crushed seeds inside the bag. The easiest way to get the rest of the oil outis to place heavy rocks on the crushed material. Another method is to place several cloth bags on top of each other in a box. Then a long wooden stick isused to slowly push a heavy cover down on the bags. Great pressure is produced in this way. Much greater pressure can be produced by using a machine, a hydraulic jack (液压千斤顶). The greater the pressure, the more oil win be produced. Small presses are important in areas where electricity or gasoline cannot be used. They are also a good way to test if a local market for oil exists. Small batch presses can be made of local materials. Their cost is low. They are not difficult to operate. And they are easy to repair. The small presses produce good quality oil. But the work is hard. And getting all the oil from the seeds can be difficult. If there is a large supply of seeds, then hand-operated presses may not be enough to support a business. Large, powered presses that can operate all day are needed. Title How to 1.______ Oil From Seeds 2.______ of oil People use oils when they cook meals, paint pictures and clean objects. Method l●Crush the seeds between two stones and then put them into a cloth bag. ●3.______ the cloth bag up. Some of the oil will flow out of the bag.●The 4.______ oil in the seeds can be got by putting more heavy rocks on them. Method 2 ●A box is used to 5.______ several bags of seeds. ●Place a heavy cover on the bags. ●Use a long wooden stick to push the cover slowly. ●The 6.______ of oil relies on the pressure placed on the bags. Small batch presses●They are at a low 7.______●They are easy to operate and repair. ●They can be used in areas 8.______ of electricity or gasoline. ●They can be operated by hand very conveniently. ●They can produce good quality oil. Large 9.______ presses ●It is easy to get all the oil from the seeds. ●They can 10.______ with a large supply of seeds and support a business. ●They can run all day. 查看答案