（計(jì)算題）
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方程
=0的根為
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的值?
計(jì)算行列式
證明題：證明
的值為0?
（計(jì)算題）
題目
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矩陣的秩
求矩陣的秩就要用初等行變換化成行最簡階梯型矩陣，看非零行數(shù)
多做幾道
最新試題
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- 生產(chǎn)、銷售假藥罪中的假藥是（） A.一切假藥 B.只限于人用藥品與非藥品 C.限于非藥品冒充藥品 D.不合格的藥品
- 背叛國家罪的犯罪主體是（ ） A.一般主體 B.特殊主體 C.自然人單位 D.達(dá)到刑事責(zé)任年齡，具有刑事責(zé)任能力的中國公民
- 不屬于特殊正當(dāng)防衛(wèi)不法侵害的是（） A.行兇 B.販毒 C.殺人 D.強(qiáng)奸
- 履約保函的擔(dān)保期限( )。 A.自發(fā)包人與承包人簽訂合同之日起，至簽發(fā)工程移交證書日止 B.自發(fā)包人與承包人簽訂合同之日起，至工程竣工驗(yàn)收合格之日止 C.自提交履約保函之日起，至簽發(fā)工程移交證書日止 D.自提交履約保函之日起，至工程竣工驗(yàn)收合格之日止
- 設(shè)計(jì)施工總承包合同文件，有①承包人建議;②專用合同條款;③價(jià)格清單。解釋順序是( )。 A.①③② B.②③① C.③②① D.①②③
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- 刑法分則中規(guī)定的“猥褻”屬于（） A.主觀的構(gòu)成要件要素 B.記述的構(gòu)成要件要素 C.規(guī)范的構(gòu)成要件要素 D.消極的構(gòu)成要件要素
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- 烏拉俄語是什么意思（ )。 A.你好 B.進(jìn)攻 C.勝利 D.沒有具體的意思，通常用作表達(dá)強(qiáng)烈情感的語氣詞。
該科目易錯(cuò)題
- It can be inferred from the passage that England is rarely hit by high magnitude earth.（）ATrueBFalseCNot Given
- 材料全屏?????????????????????????????????????????????????????????????????????????????? British Columbia【*】British Columbia is the third largest Canadian province, both in area and population. It is nearly1.5 times as large as Texas, and extends 800 miles (1,280km) north from the United States border. It includes Canada‘s entire west coast and the islands just off the coast.【*】Most of British Columbia is mountainous, with long rugged ranges running north and south. Even the coastal islands are the remains of a mountain range that existed thousands of years ago. During the last Ice Age, this range was scoured by glaciers until most of it was beneath the sea. Its peaks now show as islands scattered along the coast.【*】The southwestern coastal region has a humid mild marine climate. Sea winds that blow inland from the west are warmed by a current of warm water that flows through the Pacific Ocean. As a result, winter temperatures average above freezing and summers are mild. These warm western winds also moisture from the ocean.【*】Inland from the coast, the winds from the Pacific meet the mountain barriers of the coastal ranges and the Rocky Mountains. As they rise to cross the mountains, the winds are cooled, and their moisture begins to fall as rain. On some of the western slopes almost 200 inches (500 cm) of rain fall each year.【*】More than half of British Columbia is heavily forested. On mountain slopes that receive plentiful rainfall, huge Douglas firs rise in towering columns. These forest giants often grow to be as much as300 feet (90m) tall, with diameters up to 10 feet (3m). More lumber is produced from these trees than from any other kind of tree in North America. Hemlock, red cedar, and balsam fir are among the other trees found in British Columbia.11【單選】With which aspect of British Columbia is the passage primarily concerned?（）A?Its climateB?Its cultureC?Its geographyDIts history
- In which part of British Columbia can a mild climate be found?（）A?In the southwestBInland from the coastC?In the northDOn the entire west coast
- In Paragraph 5, the word"heavily"could best be replaced by which of the following?（）AWidelyBDenselyCChieflyDLargely
- Which of the following is NOT mentioned as a tree found in British Columbia?（）AHemlockB?CedarC?FirDPine
- What effect do the mountains have on winds?（）AMake them dry.BMake them wet.CMake them cool.D?Make them weak.
- （）AissueBpassedCdebateDanotherE?otherF?internationalGrelatedH?influenceIsawJprofessorKnationalLcomfortable
- （）AissueB?passedCdebateDanotherEotherF?internationalG?relatedHinfluenceIsawJprofessorK?nationalLcomfortable
- （）A?issueBpassedC?debateDanotherE?otherFinternationalGrelatedHinfluenceIsawJprofessorKnationalLcomfortable
- （）AissueB?passedCdebateDanotherEotherFinternationalGrelatedHinfluenceIsawJprofessorKnationalLcomfortable