从下列选项中选出适当符号填入“¬(p()q)∧p→¬q”式的括号内,使其成为有效的推理形式。
A.←
B.∨
C.→
D.∧
A.←
B.∨
C.→
D.∧
从下面提供的答案中选出应填入下列英文语句中______内的正确答案。
Software quality assurance is now an(1)sub-discipline of software engineering. As Buckly and Oston point out,(2)software quality assurance is likely to lead to an ultimate(3)of software costs. However, the major hurdle in the path of software management in this area is the lack of(4)software standards. The development of accepted and generally applicable standards should be one ofthe principal goals of(5)in software engineering.
2.从下面提供的答案中选出应填入下列英文语句中______内的正确答案。
Software quality assurance is now an(1)sub-discipline of software engineering. As Buckly and Oston point out,(2)software quality assurance is likely to lead to an ultimate(3)of software costs. However, the major hurdle in the path of software management in this area is the lack of(4)software standards. The development of accepted and generally applicable standards should be one ofthe principal goals of(5)in software engineering.
从供选择的答案中选出应填入下列英文语句中______内的正确答案。
The UNIX system contains several()that comply with the definition of a software tool. Among them are programs that(2)and manipulate text, programs that analyze text files,and programs that format text files to produce high quality hard copy suitable for(3).
One characteristic ofthese tools is that they operate on ordinary text(4), which means that you can read the input and output files by simply listing them on a(5).
供选择的答案:
(1) terminal (2) keyboard (3) programs (4) programming (5) files
(6) directories (7) create (8) build (9) publication (10) painting
请从下列选项中选出“在美国,人人都能买到枪”地道的英文表达。()
A、In the United States, everyone can buy a gun.
B、In the United States, guns are available to everyone.
C、In the United States, every person can buy a gun.
在下面的代码段中填入一个适当的语句,表示从输入流中能读取对象(注:FileInputStream的形象为the Time)。 FileInputStream in=【 】; ObjectInputStream s=ObjectInputStream(in); String today=(String)s.readObject(); Date data=(Date)s.readObject();
A.无论什么情况下,查找操作都是在整个文档范围内进行
B.可以从插入点当前位置开始向上查找
C.Word可以查找带格式的文本内容
D.Word可以查找一些特殊的格式符号,如分页线等
要求受测者必须从两个或两个以上的选项中,选出最能代表自己特征的描述语句。这种评定量表是()
A.观察式量表
B.锚定式量表
C.迫选式量表
D.数字式量表
从供选择的答案中选出应填入下面一段英文中______内的正确答案。
A light-emitting diode (LED) is a semiconductor(1)that emits visible light when an electric current passes throughit.The light is not particularly(2), but in most LEDs it is monochromatic, occurring at a single(3). The output from an LED can range from red (at a wavelength of approximately 700 nanometers) to blue-violet (about 400 nanometers). Some LEDs(4)infrared (IR) energy (830 nanometers or longer); such a device is known as an infrared-emitting diode (IRED).
An LED or IRED(5)of two elements of processed material called P-type semiconductors and N-type semiconductors. These two elements are(6)in direct contact, forming a region called the P-N junction. In this respect, the LED or IRED(7)most other diode types, but there are important(8). The LED or IRED has a transparent package, allowing(9)or IR energy to pass through. Also, the LED or IRED has a large PN-junction area whose(10)is tailored to the application.
供选择的答案:
1.wavelength 2.shape 3.emit 4.device 5.resembles
6.bright 7.visible 8.consists 9.differences 10.placed
从供选择的答案中选出应填入下面一段英文中______内的正确答案。
Java was introduced by Sun Microsystems in 1995 and instantly(1)created a new sense of the interactive possibilities ofthe Web. Both ofthe major Web browsers include a Java(2)virtual machine. Almost all major operating system developers (IBM, Microsoft, and others) have added Java(3)compilers as part oftheir product offerings.
The Java virtual machine includes an optional just-in-time compiler that(4)dynamically compiles bytecode into executable code as an alternative to(5)interpreting one bytecode instruction at a time. In many(6)cases, the dynamic JIT compilation is faster than the virtual machine interpretation.
JavaScript should not be(7)confused with Java. JavaScript, which originated at Netscape, is interpreted at a higher level, is easier to learn than Java, but(8)lacks some of the portability of Java and the speed of bytecode. Because Java applets will run on almost any operating system without(8)requiring recompilation and because Java has no operating system-unique extensions or variations, Java is generally regarded as the most strategic(10)language in which to develop applications for the Web.
供选择的答案:
1.confused 2.compilers 3.dynamically 4.requiring 5.cases
6.interpreting 7.language 8.virtual 9.created 10.lacks