首页
登录
职称英语
The difference between a liquid and a gas is obvious(1)_____ the conditions
The difference between a liquid and a gas is obvious(1)_____ the conditions
游客
2024-10-06
0
管理
问题
The difference between a liquid and a gas is obvious(1)_____ the conditions of temperature and pressure commonly found(2)_____ of the Earth. A liquid can be kept in an open container and (3)_____ it to the level of a free surface. A gas forms no free surface but(4)_____ to diffuse throughout the space available; it must(5)_____ be kept in a closed container, as(6)_____ a planet’s atmosphere. The distinction was a(7)_____ feature of early theories(8)_____ the phases of matter. In the nineteenth century, for example, one theory maintained that a liquid could be "dissolved" in a vapor without losing its identity, and another theory held that the two phases are(9)_____ different kinds of molecules. The theories now prevailing(10)_____ a quite different approach by emphasizing(11)_____ liquids and gases have in common. They are both forms of matter that have no permanent structure, and they both(12)_____ easily. They are fluids.
The(13)_____ similarity of liquids and gases becomes clearly apparent when the temperature and pressure are raised somewhat.(14)_____ a closed container partially filled with a liquid is heated. The liquid expands, or(15)______, becomes less dense; some of it evaporates.(16)_____, the vapor above the liquid surface becomes denser as the evaporated molecules are(17)_____ it. The combination of temperature and pressure(18)_____ the densities become equal is(19)_____ the critical point. Above the critical point the liquid and the gas can no longer be(20)_____; there is a single, undifferentiated fluid phase of uniform density. [br] (18)
选项
A、on that
B、on which
C、at that
D、at which
答案
D
解析
本空格要求填入带介词的关系代词,这个介词由先行词决定。本题中先行词为temperatureand pressure,表示“在某种温度和压力下”.应用介词at,故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3790009.html
相关试题推荐
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
Thedifferencebetween"writer"and"reporter"or"journalist"isn’tthatth
随机试题
Theyhavebeenwritersandactors,entertainersandcreators.Theyhavewo
二次热分解后产生的气体从炭化室顶部空间经上升管排出,这些气态产物称为()。A
肘关节受伤后用绷带包扎,应选用() A.环形包扎 B.螺旋形包
以下哪项属于淋病奈瑟菌的致病因素A.过氧化氢酶B.外毒素C.鞭毛D.芽胞E.菌毛
甲状腺功能亢进患者术前需用碘剂准备者,下列正确的是A.每日3次,首日每次由3滴开
企业某设备1~6周期的实际销售量分别为:500台、510台、480台、600台、
组织流水施工可以节省工作时间,其所用的手段是()。A.连续施工 B
甲、乙二公司因专利实施许可合同履行发生争议,甲公司依双方的仲裁条款申请仲裁。仲裁
易粘连的中药饮片有A.乳香、没药 B.阿魏、芦荟 C.龟甲胶、鹿角胶 D.
某施工单位承接了一段高速公路沥青混凝土路面施工,施工工艺流程如图所示。 根
最新回复
(
0
)