题海让大学四年没有难题
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判断题 若是矩阵,是矩阵,则是矩阵. ( )

A. 正确

B. 错误

学科：默认课程

时间：2025-11-07 12:32:26

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题目1
判断题
若<img src="https://tihai-oss-cloud.itihey.com/img/08c600b84f6d812b74273e521e52fa0b.png">则<img src="https://tihai-oss-cloud.itihey.com/img/bbc0b0c16de9ca868b6d371c09b3f99c.png">. ( )
A. 正确B. 错误
题目2
判断题
若<img src="https://tihai-oss-cloud.itihey.com/img/fd66494ceb102cc30709d5d864e69f12.png">是<img src="https://tihai-oss-cloud.itihey.com/img/7d5b3af1680d4d8b2edd6aef046cc7c3.png">矩阵,<img src="https://tihai-oss-cloud.itihey.com/img/76c463cc0e16bd3b08dd4061701c65fb.png">是<img src="https://tihai-oss-cloud.itihey.com/img/5189b68eae5664a2a8eff53056473966.png">矩阵,则<img src="https://tihai-oss-cloud.itihey.com/img/0c3aeba973727e58ae90e9781a703c81.png">是<img src="https://tihai-oss-cloud.itihey.com/img/6a167c3b02aa6822beb53e3a58782ffd.png">矩阵. ( )
A. 正确B. 错误
题目3
判断题
若<img src="https://tihai-oss-cloud.itihey.com/img/40f5718f563625a2f81dca4275683351.png">且<img src="https://tihai-oss-cloud.itihey.com/img/6b9bcdb00a911813fabd4d5615e8e18a.png">则<img src="https://tihai-oss-cloud.itihey.com/img/49b2dc69de8152eb2eb58c8b278c3761.png">( )
A. 正确B. 错误
题目4
判断题
若<img src="https://tihai-oss-cloud.itihey.com/img/c3f4f3f33b04e8b1d8c25dac2fae44f6.png">则<img src="https://tihai-oss-cloud.itihey.com/img/d23f9c918fa692b0f8df45819c467104.png">或<img src="https://tihai-oss-cloud.itihey.com/img/e83e9fb92d0914a5655147f34205fe08.png">.( )
A. 正确B. 错误
题目5
判断题
设<img src="https://tihai-oss-cloud.itihey.com/img/c532d9218022106a433825b2c9a0847f.png">都是<img src="https://tihai-oss-cloud.itihey.com/img/498cc0b7fc167637bc054229cd0e3cd4.png">阶方阵,则<img src="https://tihai-oss-cloud.itihey.com/img/32ef1b5b92ca1f52d310a843c3479389.png">(<img src="https://tihai-oss-cloud.itihey.com/img/14725cf859829e6d87723bf9bc23c5b5.png"><img src="https://tihai-oss-cloud.itihey.com/img/dc64d8a08f8eb768422b837c7f787d56.gif">为非负整数).( )
A. 正确B. 错误
题目6
单选题
若<img src="https://tihai-oss-cloud.itihey.com/img/23c41b9ccc2dac174558bca96bb7f7f0.png"><img src="https://tihai-oss-cloud.itihey.com/img/dc64d8a08f8eb768422b837c7f787d56.gif">,做乘积<img src="https://tihai-oss-cloud.itihey.com/img/265d15daba62779e593766f4a31c048f.png">则必须满足( )
A. <img src="https://tihai-oss-cloud.itihey.com/img/adc9bfb6aebd19e5491ca5ad1b1dfb75.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/bdec995fb397335339375416778ee050.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/0945a87966ede4519097e4e7aeac65d4.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/5ab3f2ad03fb54d668037853a2fe8edc.png">
题目7
单选题
<img src="https://tihai-oss-cloud.itihey.com/img/267ce3136577d156136e36ceaa95ba10.png">
A. <img src="https://tihai-oss-cloud.itihey.com/img/7cfb6896cb5e92ab25c86c0d977526f5.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/8a1ad50ceebc9acea8c6b4bd1f97a252.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/0883b94d896096d717cf49938ab45614.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/91ffb2666c356f52850ae75097a8e1f8.png">
题目8
单选题
Flowering plants that complete their life cycles in a single season are called
A. perennialsB. biennialsC. monoseasonalsD. annualsE. accelerophytons
题目9
单选题
A plant that requires two growing seasons to complete its life cycle is a(an)
A. annualB. perennialC. biennialD. hypogealE. composite
题目10
单选题
Most grasses, trees and 'weeds' are flowering plants that produce ______________ flowers
A. large, conspicuousB. colorfulC. fragrantD. E. small, inconspicuousF. few
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