题目内容 (请给出正确答案)
提问人:网友f******g 发布时间:2022年3月24日 03:32
[单项选择题]

检测末梢小静脉血流,彩色多普勒血流显像速度标尺应选择()

A.用最高速档(例如1.0m/s以上)

B.用较高速档(例如0.8m/s以上)

C.应用低速档(例如0.15m/s以上)

D.随意

E.以上都不是

参考答案
十点题库官方参考答案 (由十点题库聘请的专业题库老师提供的解答)
更多“检测末梢小静脉血流,彩色多普勒血流显像速度标尺应选择()”相关的问题
根据《公司法》的有关规定,有限责任公司注册资本的最低限额为人民币( )。A: 1万元B: 3万元C: 5
根据《公司法》的有关规定,有限责任公司注册资本的最低限额为人民币( )。 A: 1万元 B: 3万元 C: 5万元 D: 10万元
点击查看答案
诊断急性白血病最有意义的外周血异常是
A.白细胞计数2×109/L
B.白细胞计数20×109/L
C.血小板少见
D.分叶核粒细胞>89%
E.原始细胞27%
点击查看答案
All art booms are different. The previous one ended in 1989, when Japanese buyers withdrew from the Impressionist market. Interest rates rose in the slump that followed; there were plenty of sellers but no buyers. Today the reverse is true. Buyers are looking to diversify into alternative assets. The only problem is the sellers. There is plenty of money, but little to buy. It should follow, then, that buyers will snap up anything. But that is not quite the case, as the Old Master sales at Christie’s in London on December 8th showed only too well. In the recent sales the best pieces sold brilliantly, and the rest hardly at all. The best included a rare Raphael drawing, and an elegant self-portrait by Sir Anthony van Dyck. Many of the leading dealers were present, including Philip Mould, known as the BBC’s "art detective;" Alfred Bader, a rich American art-market broker; and the heirs to two important art-dealing businesses, William Noortman and Simon Green. Van Dyck’s oval shaped self-portrait, painted in 1640, the year before he died, had been in the same family for almost 300 years. Mr. Mould joined forces with Mr. Bader to try and win the painting. Young Mr. Noortman, the under bidder who was trying to buy the picture for stock, did not stand a chance. The winning bid was £7.4m, nearly three times van Dyck’s previous auction record. The last lot in Christie’s sale was a black chalk drawing, less than a foot square, by Raphael, an early 16th-century Italian master. It is the study of a head for one of the Greek muses. Its beauty, rarity and the sense that the study may well have been used by the artist himself when working on a larger painting drew collectors from far and wide. Christie’s had estimated the study would fetch £12m-16m. Bidding opened at £8.5m, with three buyers on the telephone. Jennifer Wright, Christie’s New York-based drawings specialist, made a final bid for the Raphael of if 26m—a world record for a work on paper.After the sale, Christie’s international co-head, Richard Knight, was quick to point out that, at £ 68.4m, theirs had been the biggest Old Master sale ever. "This result shows what a very solid market this is," he said. But that took no account of the failures, which were considerable. 15 of the 43 lots in Christie’s auction failed to sell at all.
All art booms are different. The previous one ended in 1989, when Japanese buyers withdrew from the Impressionist market. Interest rates rose in the slump that followed; there were plenty of sellers but no buyers. Today the reverse is true. Buyers are looking to diversify into alternative assets. The only problem is the sellers. There is plenty of money, but little to buy.
It should follow, then, that buyers will snap up anything. But that is not quite the case, as the Old Master sales at Christie’s in London on December 8th showed only too well. In the recent sales the best pieces sold brilliantly, and the rest hardly at all. The best included a rare Raphael drawing, and an elegant self-portrait by Sir Anthony van Dyck. Many of the leading dealers were present, including Philip Mould, known as the BBC’s "art detective;" Alfred Bader, a rich American art-market broker; and the heirs to two important art-dealing businesses, William Noortman and Simon Green.
Van Dyck’s oval shaped self-portrait, painted in 1640, the year before he died, had been in the same family for almost 300 years. Mr. Mould joined forces with Mr. Bader to try and win the painting. Young Mr. Noortman, the under bidder who was trying to buy the picture for stock, did not stand a chance. The winning bid was £7.4m, nearly three times van Dyck’s previous auction record.
The last lot in Christie’s sale was a black chalk drawing, less than a foot square, by Raphael, an early 16th-century Italian master. It is the study of a head for one of the Greek muses. Its beauty, rarity and the sense that the study may well have been used by the artist himself when working on a larger painting drew collectors from far and wide.
Christie’s had estimated the study would fetch £12m-16m. Bidding opened at £8.5m, with three buyers on the telephone. Jennifer Wright, Christie’s New York-based drawings specialist, made a final bid for the Raphael of if 26m—a world record for a work on paper.After the sale, Christie’s international co-head, Richard Knight, was quick to point out that, at £ 68.4m, theirs had been the biggest Old Master sale ever. "This result shows what a very solid market this is," he said. But that took no account of the failures, which were considerable. 15 of the 43 lots in Christie’s auction failed to sell at all.
点击查看答案
Windows系统中,不同文件夹中的文件不能同名。
点击查看答案
阿利沙坦酯、坎地沙坦酯和奥美沙坦酯都是不经CYP450酶代谢的ARB,但是阿利沙坦酯(信立坦)有降低尿酸的作用,其他两个没有。()
点击查看答案
新涡轮增压器在安装时,应加注润滑油。
点击查看答案

所有for循环语句都可以用while循环语句改写。反之,所有的while循环也可以改为for循环。

A . 正确B . 错误
点击查看答案
锅炉水系统监控的主要内容包括()。
A.锅炉热水出口压力、温度、流量监测
B.锅炉补水泵的自动控制
C.锅炉、给水泵的顺序启停及运行状态显示
D.故障报警
E.锅炉、排水泵的顺序启停及运行状态显示
点击查看答案
公关人员采取()方法来回答“我们怎样才能衡量公共关系的结果?”问题。
A.目标管理B.委员会管理C.战略管理D.战术管理
点击查看答案
楼梯的主要使用和承重部分是()
A.休息平台
B.栏杆
C.楼梯段
D.扶手
点击查看答案
绘制直方图的过程中,确定的组界值应与原始数据的精度一样。( )
点击查看答案
教师在制定教育计划、设计和实施教育活动时,要兼顾到儿童体、智、德、美诸方面发展的需要。这句话体现()。
A.重视个别差异的原则B.尊重儿童人格尊严和合法权益的原则C.保教结合的原则D.促进儿童全面发展教育原则
点击查看答案
用染色体畸变分析估算剂量时,取血时间最迟不要超过
A.3d
B.60d
C.7d
D.15d
E.100d
点击查看答案
一根0.2m长的直导线,在磁感应强度B=0.8T的匀强磁场中以V=3m/S的速度做切割磁感线运动,直导线垂直于磁感线,运动方向跟磁感线、直导线垂直。那么,直导线中感应电动势的大小是()。
A.0.48v
B.4.8v
C.0.24v
D.0.96v
点击查看答案


如图,在磁感应强度为B、方向垂直纸面向里的匀强磁场中,金属杆MN在平行金属导轨上以速度v向右匀速滑动,MN中产生的感应电动势为E1;若磁感应强度增为2B,其他条件不变,MN中产生的感应电动势变为E2。则通过电阻R的电流方向及E1与E2之比E1∶E2分别为 (  )


A . c→a,2∶1B . a→c,2∶1C . a→c,1∶2D . c→a,1∶2
点击查看答案
客服
TOP