8．河流的侵蚀作用是指（） - 查题网

>> 国家开放大学 / 工程地质

国家开放大学 / 工程地质

8．河流的侵蚀作用是指（）

A. 河流将所携带的物质向下游方向搬运的过程
B. 水直接溶解岩石中矿物的作用
C. 河流搬运物从水中沉积下来的过程
D. 河水冲刷河床，使岩石发生破坏的作用

积分

工程地质

参考答案：

点击查看答案

佳题速递：

13. 时间序列分析可构成几种模型 A、2种 B、3种 C、4种 D、5种中石油

题型描述: 简答题简答题题型塔板理论还存在哪些不足？现代色谱分析

2、Americans believe so much in moving ahead that they are _ 1 _ researching, experimenting and exploring. They treat time as if it _ 2 _ real — a precious resource. They budget it, save it, waste it, steal it, kill it, cut it, account for it and charge for it. A foreigner’s first impression _ 3 _ the U.S. is that everyone is in a rush and often _ 4 _ pressure. City people always appear to be hurrying to get where they are going, restlessly seeking attention or elbowing others. Foreigners who miss smiles, brief conversations, or leisurely exchanges with strangers should not feel hurt by this. Americans value time so highly, they dislike anyone “wasting” it _ 5 _ an appropriate amount. New arrivals to the States will miss the custom of social talk during a business call because Americans generally _ 6 _ or enquire about their visitors professionally rather than socially. They start talking business very quickly; time is always ticking in their heads. They work hard at saving time _ 7 _ labor-saving devices so they communicate rapidly by fax, phone or email rather than through _ 8 _ contact. The impersonality of electronic communication has _ 9 _ to do with the significance of the matter _ 10 _ hand. 1. A. engaged to B. committed to C. devoted themselves to D. contribute to 2. A. were B. is C. was D. are 3. A. in B. on C. of D. to 4. A. under B. by C. in D. on 5. A. on B. to C. in D. beyond 6. A. assess B. assure C. assume D. access 7. A. in B. of C. to D. through 8. A. personnel B. personal C. personality D. impersonal 9. A. little B. no C. less D. least 10. A. of B. to C. at D. in英语(二)

若有以下函数首部 int fun(double x[10],int *n) 则下面针对此函数的函数声明语句中正确的是（）。高级语言程序设计

某天棚水平投影面积186㎡,采用方木龙骨吊顶，单价（B3-18）=3688.87元/100㎡。面层面积216㎡，采用12㎜厚纸面石膏板钉在木龙骨底，单价（B3-78）=2096.93元/100㎡。试计算相关项目综合费用建筑工程定额与预算

二氧化碳分压病理生理学(护理本)