皮皮学,免费搜题
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【简答题】
Plastic surgeons say they’re seeing more patients who want facial surgery, and they attribute the rise to social media and the growing “selfie” ( 自拍 ) trend. According to a survey conducted in the US, one in three plastic surgeons reported seeing an increase in requests for facial procedures by patients who wanted to look better online. “Social platforms are solely image-based, and they force patients to hold a microscope up to their own image and often look at it with a more self-critical eye than ever before,” Dr. Edward Farrior said in a news release. “These images are often the first impressions young people put out there to prospective friends, romantic interests, and employers, and our patients want to put their best face forward.” In part because of social media, surgeons reported that plastic-surgery patients are getting younger. This year, 58 percent of the doctors surveyed said they saw an increase in patients under 30 coming in for plastic surgery and injections in the last year. Women are still plastic surgery’s primary customers, accounting for 81 percent of all procedures and injections, but men are increasingly becoming more interested in plastic surgery. Whereas women more often ask for facelifts and eye lifts, men are more interested in keeping their hair and combating wrinkles. Meanwhile, in the under-35 category, the nose job remained the most popular elective surgical procedure for both genders, accounting for 90 percent of procedures in women and 86 percent in men. Have your selfies ever made you feel self-conscious about the way you look?
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【多选题】游客乘火车旅行时,不得将下列物品带入车内 。
A.
珍贵植物
B.
国家限制运输的物品
C.
妨碍公共卫生的物品
D.
动物
【单选题】BF 3 分子空间构型是平面三角形,而 NF 3 分子的空间构型是三角锥形,这是由于 NF 3 的杂化轨道是以下的哪一种杂化 ( )
A.
sp 3 杂化
B.
不等性 sp 3 杂化
C.
dsp 2 杂化
D.
sp 2 杂化
【单选题】燃气涡轮喷气发动机产生推力的依据是?
A.
牛顿第二定律和牛顿第三定律
B.
热力学第一定律和热力学第二定律
C.
牛顿第一定律和付立叶定律
D.
道尔顿定律和玻尔兹曼定律
【判断题】驱动变换矩阵中含有位置和姿态
A.
正确
B.
错误
【多选题】游客乘火车旅行时,不得带入车内的物品有
A.
动物
B.
污染车辆的物品
C.
珍稀植物
D.
妨碍公共卫生的物品
【单选题】下述哪种胎先露为横产式
A.
顶先露
B.
臀先露
C.
枕先露
D.
面先露
E.
肩先露
【简答题】【材料一】张无忌目不转睛的凝神观看,初时还道太师父故意将姿式演得特别缓慢,使俞岱岩可以看得清楚,但看到第七招“手挥琵琶”之时,只见他左掌阳、右掌阴,目光凝视左手手臂,双掌慢慢合拢,竟是凝重如山,却又轻灵似羽。张无忌突然之间省悟:“这是以慢打快、以静制动的上乘武学,想不到世间竟会有如此高明的功夫。”他武功本就极高,一经领会,越看越是入神,但见张三丰双手圆转,每一招都含着太极式的阴阳变化,精微奥妙,实...
【单选题】燃气涡轮喷气发动机产生推力的依据是( )
A.
牛顿第二定律和牛顿第三定律 B 热力学第一定律和热力学第二定律
B.
牛顿第一定律和付立叶定律 D 道尔顿定律和玻尔兹曼定律
【单选题】燃气涡轮喷气发动机产生推力的依据是( )
A.
牛顿第二定律和牛顿第三定律
B.
牛顿第一定律和付立叶定律
C.
热力学第一定律和热力学第二定律
D.
道尔顿定律和玻尔兹曼定律
【判断题】用杂化轨道理论解释: “BF 3 的空间构型是平面三角形 , 但 NF 3 却是三角锥形。” 解: BF 3 分子中的 B 原子以等性 sp 2 杂化轨道分别与 3 个 F 原子形成 BF 3 分子,所以 BF 3 分子呈平面三角形。而 NF 3 分子中的 N 原子采取不等性 sp 3 杂化,其中 3 个杂化轨道分别与 3 个 F 原子形成 N-F 单键,另一个杂化轨道为孤对电子所占据,所以 NF...
A.
正确
B.
错误
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