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【简答题】
已知△ABC的三个内角A、B、C的对边分别为a、b、c，若a、b、c成等差数列，且2cos2B-8cosB+5=0,求角B的大小并判断△ABC的形状.
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参考答案：
举一反三
【单选题】Medical experts have amassed evidence concluding that users of smokeless tobacco be more prone to heart disease, hypertension, and mouth cancers than people who do not use smokeless tobacco.
A.
be more prone to heart disease, hypertension, and mouth cancers
B.
are proner to heart disease, hypertension, and mouth cancers
C.
are more prone to heart disease, hypertension, and mouth cancers
D.
experience heart disease, hypertension, and mouth cancers at heightened rates
E.
suffer heart disease, hypertension, and mouth cancers at a higher risk
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【单选题】Legal experts have presented that the DNA samples and fingerprints match.
A.
evident
B.
evidence
C.
evidently
D.
to evident
查看完整题目与答案
【单选题】In Paragraph One, the sentence 'Experts long have been concerned about such growth', the phrase 'concerned about' is similar in meaning to________.
A.
worried about
B.
related to
C.
engaged in
D.
made a study of
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【判断题】船舶在纵倾状态下的排水量和浮心位置,可以利用邦戎曲线图或费尔索夫图谱求出。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In face of potential legal challenges, ______.
A.
most of the companies have taken legal action to mitigate potential challenges
B.
one third of the companies said they had not changed their policies
C.
most of the companies have taken measures to avoid potential legal challenges
D.
47% of companies had rules protecting lesbian, gay, bisexual, and transgender workers
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【简答题】What suggestions have been made by experts?
查看完整题目与答案
【简答题】Medical experts have different opinions concerning the treatment of the disease.
查看完整题目与答案
【单选题】Which of the following best describes the opinion of the experts who support the current legal age?
A.
Young people at the age of 18 are emotionally ready for marriage.
B.
Young couples should have well-paid jobs before they get married.
C.
A low legal marriage age threshold would result in higher divorce rates.
D.
A lowered legal marriage age would reduce social problems.
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【简答题】Banks have legal obligation to inspect the actual merchandise．（ ）
查看完整题目与答案
【单选题】Which of the following is NOT the opinion of the experts who are against the current legal age for marriage?
A.
The current marriage age threshold is responsible for the rising number of singles and premarital cohabitation.
B.
The current marriage age threshold is responsible for the health problems of women and children.
C.
The current marriage age threshold is responsible for the increasing number of women giving birth to children around 35.
D.
The current minimum legal marriage age for males and females should be equal.
查看完整题目与答案
相关题目：
【单选题】Medical experts have amassed evidence concluding that users of smokeless tobacco be more prone to heart disease, hypertension, and mouth cancers than people who do not use smokeless tobacco.
A.
be more prone to heart disease, hypertension, and mouth cancers
B.
are proner to heart disease, hypertension, and mouth cancers
C.
are more prone to heart disease, hypertension, and mouth cancers
D.
experience heart disease, hypertension, and mouth cancers at heightened rates
E.
suffer heart disease, hypertension, and mouth cancers at a higher risk
查看完整题目与答案
【单选题】Legal experts have presented that the DNA samples and fingerprints match.
A.
evident
B.
evidence
C.
evidently
D.
to evident
查看完整题目与答案
【单选题】In Paragraph One, the sentence 'Experts long have been concerned about such growth', the phrase 'concerned about' is similar in meaning to________.
A.
worried about
B.
related to
C.
engaged in
D.
made a study of
查看完整题目与答案
【判断题】船舶在纵倾状态下的排水量和浮心位置,可以利用邦戎曲线图或费尔索夫图谱求出。
A.
正确
B.
错误
查看完整题目与答案
【单选题】In face of potential legal challenges, ______.
A.
most of the companies have taken legal action to mitigate potential challenges
B.
one third of the companies said they had not changed their policies
C.
most of the companies have taken measures to avoid potential legal challenges
D.
47% of companies had rules protecting lesbian, gay, bisexual, and transgender workers
查看完整题目与答案
【简答题】What suggestions have been made by experts?
查看完整题目与答案
【简答题】Medical experts have different opinions concerning the treatment of the disease.
查看完整题目与答案
【单选题】Which of the following best describes the opinion of the experts who support the current legal age?
A.
Young people at the age of 18 are emotionally ready for marriage.
B.
Young couples should have well-paid jobs before they get married.
C.
A low legal marriage age threshold would result in higher divorce rates.
D.
A lowered legal marriage age would reduce social problems.
查看完整题目与答案
【简答题】Banks have legal obligation to inspect the actual merchandise．（ ）
查看完整题目与答案
【单选题】Which of the following is NOT the opinion of the experts who are against the current legal age for marriage?
A.
The current marriage age threshold is responsible for the rising number of singles and premarital cohabitation.
B.
The current marriage age threshold is responsible for the health problems of women and children.
C.
The current marriage age threshold is responsible for the increasing number of women giving birth to children around 35.
D.
The current minimum legal marriage age for males and females should be equal.
查看完整题目与答案
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