题目内容
（请给出正确答案）
The second injection should only have been given once the first drug had taken effect.
A．taken place
B．injected
C．worked out
D．worked
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“The second injection should only have been given once the first drug had taken effect.A．ta”相关的问题
12 The second injection should have been given once the first drug had taken effect.
A taken place B injected C worked out D worked
The second injection should only have been given once the first drug had taken effect.
A．taken place
B．injected
C．worked out
D．worked
The second injection should have been given once the first drug had taken effect.
A．taken place
B．injected
C．worked out
D．worked
A study used logistic regression to determine characteristics associated with Y =whether a cancer patient achieved remission (1=yes). The most important explanatory variable was a labeling index (LI) that measures proliferative activity of cells after a patient receives an injection of tritiated thymidine. It represents the percentage of cells that are “labeled.” The first table shows the grouped data. Software reports the second table for a logistic regression model using LI to predict
a. Conduct a Wald test for the LI effect. Interpret. b. Construct a Wald confidence interval for the odds ratio corresponding to a 1-unit increase in LI. Interpret. c. Conduct a likelihood-ratio test for the LI effect. Interpret. d. Construct the likelihood-ratio confidence interval for the odds ratio. Interpret.
The model has shown that this radar system, known as laser-doppler radar, can measure with absolute precision speeds varying from spaceship orbital injection (进入) velocities (速度) of five miles per second down to virtual stops--speeds of less than one ten thousandth of an inch per second. According to the scientists who are developing this system, such fine measures of velocity are of prime importance in space missions. In a rendezvous (对接) between two spaceships, or in a landing approach by a vehicle onto an orbiting space station, a bump could rip open a ship's skin, or a nudge could knock the station out of its orbit.
The light-beam radar, which operates at a frequency of trillions (百万兆) of cycles per second, could easily detect and measure the movement of a vehicle edging up to a satellite space station. A control system using so precise a signal as this would allow a huge vehicle to dock at a space station as lightly as a feather.
Laser-doppler radar ______. ()
A．measures the movements of a spaceship by means of light beam
B．makes use of microwaves
C．makes use of sound waves
D．Both A and B
The model has shown that this radar system, known as laser-dopple radar, can measure with absolute precision speeds varying from spaceship orbital injection(进入)velocities(速度)of five miles per second down to virtual stops-speeds of less than one-thousandth of an inch per second. According to the scientists who are developing this system, such fine measures of velocity are of prime importance in space missions. In a rendezvous(对接) between two spaceships, or in a landing approach by a vehicle onto an orbiting space station, a bump could rip open a ship's skin, or a nudge could knock the station out of its orbit.
The light-beam radar, which operates at a frequency of trillions of cycles(百万兆) per second, could easily detect and measure the movement of a vehicle edging up to a satellite space station. A control system using so precise a signal as this would allow a huge vehicle to dock at a space station as lightly as a feather.
Laser-dopple radar ______ .
A．measures the movement of a spaceship by means of light beam
B．makes use of microwaves
C．makes use of sound waves
D．both A and B
Mr. Green, you are going to {A. get; B. give; C. make; D. hold} some injections, and you’ll feel much better. A nurse will come and give you the first one this evening, and then you’ll {A. may; B. have to; C. had better} get another one tomorrow evening.” In the evening a young nurse came to Mr. Green’s bed and said to him, “I am going to give you your {A. first; B. one; C. two; D. second} injection now, Mr. Green. Where do you want it？”
The old man was surprised. He looked at the nurse for a {A. hour; B. minutes; C. moment}, then he said, “Nobody has ever let me choose that before. Are you really going to let me choose now？”
“Yes, Mr. Green,” the nurse answered. She was in a hurry. “Where do you want it？”
“Well, then,” the old man answered {A. with a smile; B. in time; C. in surprise; D. with tears in his eyes} “I want it in your left arm, please.”
A.makes use of microwaves
B.measures the movements ofa spaceship by means of light beam
C.makes use of sound waves
D.Both A and B
二、Translate the following sentences into Chinese. （翻译每段30分，共90分） 1. Materials have always been important to the advance of civilization: entire eras are named for them. After evolving from the Stone Age through the Bronze and Iron Ages, now in the modem era we have vast numbers of tailored materials to make use of. We are really living in the Materials Age. Today we demand more from our materials than mechanical strength. The structure of a material usually relates to the arrangement of its internal components. Subatomic structure involves electrons within the individual atoms and interactions with their nuclei. 2. Die casting is the infant of modern metal casting methods. Its use is largely limited to the non-ferrous metals. The rapid chilling of the metal by its injection into bare steel molds provides for rapid production cycling but at the same time presents severe challenges to orderly mold filling. The first metals used for die casting were tin and lead, but their cost and limited mechanical properties limited their application. With the development of zinc base alloys before the first world war, the significance of tin and lead declined. Aluminum alloys were first used for commercial die casting. 3. Annealing has a second advantage, it helps to relieve any internal stresses which exist in the metal. These stresses are liable to occur through hammering or working the metal, or through rapid cooling. Metal which we cause to cool rapidly contracts more rapidly on the outside than on the inside. This produces unequal contractions, which may give rise to distortion or cracking. Metal which cools slowly is less liable to have these internal stresses than metal which cools quickly. On the other hand, we can make steel harder by rapid cooling.
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
