农学
相似问题和答案
第1题：
A passenger plane is able to carry a fixed weight, including passengers and fuel.Which wing design would be best for such a plane?
A.Design 1
B.Design 2
C.Design 3
D.Design 4
To handle the question, you need to infer that the “best” design would be one that is most efficient in terms of its lift-to-drag ratio as well as in terms of fuel consumption. Fortunately,Tables 1 and 2 each show that design 2 is most efficient.
第2题：
②每个顺序在每个因素的实验次数相同
③每个顺序在每个被试的实验次数相同
第3题：
If the square root of t is a real number, is the square root of t positive?
(1) t＞0
(2) t2＞0
E 解析：This question is looking for a definite yes or no answer. Statement (1) is not sufficient since all it tells us is that t is a positive number. Unless the radical sign (
) is used, a positive number has two square roots, a positive root and a negative root. For example, if t is 4, then it has two square roots, 2 and -2. So we can eliminate A and D.With statement (2) alone, we don't get much more information; all it really tells us is that t is a positive number (it cannot be negative, since the square root of a negative number is a complex number, not a real number). So again, t could be 4, and its root could be either positive or negative. So we can eliminate B. Putting them both together doesn't tell us whether the square root of t is positive either, so our answer has to be E.
第4题：
第5题：
编译以下代码，将出现什么情况?()
abstract class Shape
{ abstract void draw();}
Class Square extends Shape{ }
A. Square类和Shape类都可以成功编译
B. Square类无法编译，但Shape类可以编译
C. 类无法编译，但Square类可以编译
D. Square类和Shape类都无法编译
第6题：
The modern languages Harvard taught in 1825 were______.
A. Latin and Greek
B. Latin, Green, French and German
C. American history and German
D. French and German
38．答案为D 从第三段可找到这个细节，哈佛讲授的现代语言是法语和德语。D为正确答案。
第7题：
Our products have been enjoyed popularity in Latin American markets.()
第8题：
According to the third paragraph ,which of the following is true?
[ A] Five percent of American college students learnt Latin texts.
[ B] Students in New England learnt Latin texts in official organizations.
[ C] Students were compelled to learn modern European languages.
[ D] American college students had to learn Latin grammar by heart.
60.B【精析】该题为细节题。根据第三段第三句“As recently as the last century, when less than 5% of Americans went to college at all, students in New England establishments were compelled mainly to memorize and recite various Latin texts...”我们知道，上世纪美国只有不到5%的人接受大学教育，而只有新英格兰教育机构的学生们被强迫记忆及背诵各类拉丁文课文，故A、D项错误；根据A 项的分析我们知道，新英格兰的学生在教育机构学习拉丁文课文，教育机构属于官方组织，故B项正确；根据第三段第三句“… crusty professors angrily opposed the introduction of any new scien- tific discoveries or modern European languages。”我们知道，脾气暴躁的大学教授愤怒的反对引进任何新科学发现或者现代欧洲语言，故C项错误。
第9题：
In software engineering the design phase is divided into（ ）。
A.system design and detailed designB.computer design and program designC.system design and hardware designD.computer design and detailed design
第10题：
B.computer design and program design
C.system design and hardware design
D.computer design and detailed design
在软件工程中设计阶段可以分为（ ）。
A. 系统设计与详细设计 B. 计算机设计与程序设计
C. 系统设计与硬件设计 D. 计算机设计与详细设计