软件可靠性测试过程的正确顺序为________。A.定义软件运行剖面、设计测试用例、

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问题:

软件可靠性测试过程的正确顺序为________。

A.定义软件运行剖面、设计测试用例、确定可靠性目标、实施可靠性测试、分析测试结果

B.确定可靠性目标、定义软件运行剖面、设计测试用例、实施可靠性测试、分析测试结果

C.设计测试用例、定义软件运行剖面、确定可靠性目标、实施可靠性测试、分析测试结果

D.确定可靠性目标、设计测试用例、定义软件运行剖面、实施可靠性测试、分析测试结果

考点:计算机等级考试软件测试工程师计算机四级软件测试工程师
题型:单项选择题

已知病毒的核酸有双链DNA、单链DNA、双链RNA和单链RNA四种类型。现发现了一种新病毒,要确定其核酸属于上述哪一种类型,应该[     ]

A.分析碱基类型,确定碱基比率

B.分析蛋白质和氨基酸组成,分析碱基类型

C.分析碱基类型,分析核糖类型

D.分析蛋白质的氨基酸组成,分析核糖类型

题型:单项选择题

(6分)如图所示,一根直棒长度为5m,用手提着其上端,在其下端的正下方10m处有一长度为5m的、内径比直棒大得多的空心竖直管子,放开后让直棒做自由落体运动(不计空气阻力,重力加速度取g=10m∕s2)。求:

(1)直棒下端下落至空心管上端时所用的时间;

(2)直棒通过该空心管所用的时间。

题型:单项选择题

[说明] 完成以下中序线索化二叉树的算法。 [函数] Typedef int datatype; Typedef struct node { Int ltag, rtag; Datatype data; *lchild,* rchild; }bithptr; bithptr pre; void inthread ( p ); {if {inthread ( p->lchild ); if ( p->lchild==unll ) (1) ; if ( P->RCHILD=NULL) p->rtag=1; if (2) {if (3) pre->rchild=p; if ( p->1tag==1 ) (4) ; } INTHREAD ( P->RCHILD ); (5) ; } }

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Questions 9-18


·Read the following article and answer questions 9-18 on the next page.

Apples: The Live Longer Fruit


0. Apples have been a product of healthy eating for many years, and the often-repeated line of an apple a day keeping the doctor away is far from a myth. Apples really do have a wonderful variety of nutritional benefits, and are a tasty addition to any diet of good health and longevity. Below is a list of the top five benefits of making apples a standard part of your daily diet.
1. Pectin (果胶) is a source of dietary fiber and a very handy nutrient to have in one’s diet. While it is also found in oranges, plums, and other fruits, apples have the highest concentration of them all. Pectin works to increase the stool’s volume and resistance of fluids and is therefore helpful in treating constipation, diarrhea, and generally improving the health of the bowels (肠) .
2. A study on nutrition and heart disease found that eating three apples a day for three months can help you to drop your cholesterol by at least 20 points. How does this happen Apple pectin, that miraculous source of dietary fiber, helps to draw bad LDL cholesterol out of the system. Not only that, but the antioxidant quercetin(栎皮酮)that is found in apples inhibits the LDL cholesterol from even accumulating in the body’s bloodstream.
3. The high amounts of quercetin, other flavonoids (类黄酮) , and phytochemicals (植物化学 因子) found in this fruit deliver potent antioxidant activity to all who eat an apple, and with that inhibit the actions of free radicals. In addition, the phytochemicals may act against cancer-causing substances, which will likewise help to prevent cancer. This means that apple eating prevents cancer of the prostate (前列腺) and lung, as well as other parts of the body.
4. There may have been many generations of explorers that sought the fountain of youth, but all they had to do was fight the daily stresses of life with a tasty apple! The phytochemicals that come from the bright colors you find in the skins of your favorite apple variety, along with aiding the apple’s ability to lower cholesterol and fight cancer, also inhibits the onset of diabetes, high blood pressure, heart disease, and other conditions that lead to potentially weakening situations in old age.
5. If keeping a full head of hair will help you to age more gracefully, then chow down on some apples. Chinese medicine considers hair loss to be a sign of a reduced kidney essence, and apples are on the list of fruits and vegetables that will help you to restore this essence and nourish the blood that flows to your hair follicles (毛囊) .

Questions 9-13


·For questions 9-13, choose the best title for each paragraph from the box below.
·For each numbered paragraph (1-5). mark one letter (A -G) on the Answer Sheet.
·Do not mark any letter twice.
  • A. Apples lower cholesterol.
  • B. Apples benefit young and old.
  • C. Apples slow the aging process.
  • D. Apples reduce the risk of cancer.
  • E. Apples help to prevent hair loss.
  • F. Apples enrich people’s diet.
  • G. Apples improve the bowels.


Paragraph 5: ______

题型:单项选择题

若主机A与Switchl的e0/2端口相连,请完成Switchl相应端口设置。
Switch1(config)#interface e0/2
Switch1(config-if)# (8) (设置端口为接入链路模式)
Switch1(config-if)# (9) (把e0/2分配给VLAN 100)
Switch1(config-if)#exit
若主机A与主机D通信,请填写主机A与D之间的数据转发顺序。
主机A→ (10) →主机D。

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