主页
学科
搜索
账户
常见问题
当前学科:高级物探考工
题目:
判断题
被研究地质体的厚度等于或大于1/4波长时的厚度称为地层的调谐厚度.
A . 正确
B . 错误
答案:
<查看本题扣1积分>
查看答案
答案不对?请尝试站内搜索
推荐知识点:
小儿为纯阳之体,伤于外邪以热性病证为多,其原因是六气易从()
小地老虎是一种()害虫,其越冬分界线是北纬()度,即元月份平均温度()℃等温线。
液氯气化时,往氯气升压器(E-4602)中送热水,待氯气压力达到()后,将其送入液氯贮槽 上部
无机胶凝材料又称矿物胶凝材料,它根据硬化条件可分为气硬性胶凝材料与水硬性胶凝材料。()只能在空气中硬化,并且只能在空气中保持或发展其强度。
简述环境标准的分类、分级及使用原则。
在“永安教案”中被处死的传教士的名字叫()。
女,65岁。戴上下活动义齿6年,因咀嚼无力、面形改变而重做义齿,戴新义齿1个月后,面部肌肉酸痛不适。查:缺失,托式可摘局部义齿修复,义齿各部与组织贴合良好。义齿稳定,咬合接触好,上下唇闭合时肌肉稍紧张。造成面部肌肉酸痛的原因是()。
As Christmas is coming, there are presents to be bought, cards to be sent, and rooms to be cleaned. Parents are ___1___ with difficult jobs of hiding presents from curious young children. If the gifts are large, this is sometimes a real ___2___. On Christmas Eve, young children find the excitement almost unbearable. They are torn between the wish to go to bed early so that Father Christmas will bring their presents quickly and the wish to stay up late so that they will not miss the fun. The wish for gifts usually proves stronger. But though children go to bed early, they often lie awake for a long time, hoping to get a short ___3___ at Father Christmas. Last Christmas, my wife and I successfully hid a few large presents in the storeroom. I ___4___ the moment when my son, Jimmy, would ask me where that new bike had come from, but ___5___ he did not see it. On Christmas Eve, it took the children hours to go to sleep. It must have been nearly ___6___ when my wife and I went quietly into their room and began filling stockings. Then I pushed in the ___7___ I bought for Jimmy and left it beside the Christmas tree. We knew we would not get much sleep that night, for the children were ___8___ to get up early. At about five o’clock the next morning, we were woken by loud sounds coming from the children’s room — they were shouting excitedly! Before I had time to get out of bed, young Jimmy came riding into the room on his new bike, and his sister, Mary, followed close behind pushing her new baby carriage. Even the baby arrived. He moved ___9___ the hands and knees into the room dragging a large balloon behind him. Suddenly it burst. That woke us up ___10___. The day had really begun with a band! ___3___内应选()
出血疹多见于
塑料在使用过程中出现变硬、变脆、失去弹性现象的原因是塑料中出现了()。