分析电商客服与传统客服的关系

A．I like the weather

B．It’s sunny

C．I don’t like the weather

D．It’s rain．

Wht does theuthor men by sying tht the Grnd Cnyon is of reltively recent origin Wht does theuthor men by sying tht the Grnd Cnyon is of reltively recent origin The riverlmost completed its work of erosion onlybout six million yersgo. B．The Colordo Plteu only rose comprtively short time from now. C．Volcnic debrisnd intrusions of igneous rockre of recent origin. D．The form. of the cnyon is the result of the recent work done by the nturl force.

A．The river almost completed its work of erosion only about six million years ago．

B．The Colorado Plateau only rose a comparatively short time from now．

C．Volcanic debris and intrusions of igneous rock are of recent origin．

D．The form． of the canyon is the result of the recent work done by the natural forc

E．

Wht ________ if there ______ no wter orir on the erth hppen, isB．will hppen, isC．will hppeWht ________ if there ______ no wter orir on the erth hppen, is B．will hppen, is C．will hppen, will be D．hppen ,re

A．happen, is

B．will happen, is

C．will happen, will be

D．happen ,are

And grinding nuts and other plant foods, that could be adapted to newly cultivated foods． By the end of the Archaic era,people in eastern North America had domesticated certain native plants, including sunflowers weeds called goosefoot, sumpweed,or marsh elder and squash or gourds of some kin

D．These provided seeds that were important sources of carbohydrates and fat in the diet． dig holes． It has been suggested that sunflower, sumpweed,and other plants almost domesticated themselves, that is , they thrived in human –disturbed habitats, so humans intensively collected them and began to control their distribution． Women in the Archaic communities were probably the main experimenters with cultivation, because ethnoarchaeological evidence tells us that women were the main collectors of plant food and had detailed knowledge of plants． The passage mainly discusses which of the following aspects of the life of Archaic peoples A．The principal sources of food that made up their diet

B．Their development of ground stone tool technology

C．Their development of agriculture

D．Their distribution of work between men and women

原子序数小于36的四种元素X、Y、Z、W，有关它们的信息如下表所示：元素部分结构知识部分性质XX原子核外电子排布原子序数小于36的四种元素X、Y、Z、W，有关它们的信息如下表所示： 元素 部分结构知识 部分性质 X X原子核外电子排布在三个能级上，且有三个电子能量相同 X有多种氧化物，如XO、XO 2 、X 2 O 4 等；通常情况下XO 2 与X 2 O 4 共存 Y Y原子的最外层电子数等于次外层电子数的2倍 Y是形成化合物种类最多的元素 Z Z原子的最外层电子数多于4 Z元素的最高正化合价与最低负化合价代数和等于6 W W的一种核素质量数为52，中子数为28 ＋6价W的化合物有强氧化性，可用于皮革加工、吹气法检查司机是否酒驾等 请填写下列空白（）W的基态原子核外电子排布式是_____________________________

在学习核外电子排布知识时，甲、乙两小组对多电子原子的能级的有关知识产生了分歧：甲组认为第3周期元素的基态在学习核外电子排布知识时，甲、乙两小组对多电子原子的能级的有关知识产生了分歧：甲组认为第3周期元素的基态原子中，不可能出现d电子，而乙组认为第3周期元素基态原子中一定有d电子，下列可作为甲组论据的是 [ ]能量最低原理 B．泡利不相容原理 C．洪特规则 D．近似能级图中的顺序，3d轨道能量比4s轨道高

A．能量最低原理

B．泡利不相容原理

C．洪特规则

D．近似能级图中的顺序，3d轨道能量比4s轨道高