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【简答题】
如图，要测量河两岸相对应两点A、B之间的距离（即），先从B点出发与AB成90°角方向走50m到O点处立一标杆，然后方向不变，继续向前走10m到C处（点B，O，C在同一条直线上），在C处转90°，沿CD方向再走18m到达D处，使得点A、O、D在同一条直线上．那么A、B之间的距离是多少？
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举一反三
【单选题】Which of the following is the disadvantage mentioned in the passage?
A.
Less care.
B.
More loneliness.
C.
Less freedom.
D.
Less happiness.
查看完整题目与答案
【单选题】假定学生关系S(SNO,SNAME,SEX,AGE),课程关系是C(CNO,CNAME,TEACHER),学生选课关系SC(SNO,CNO,GRADE)。要查找选修“数据库”课程的“男”学生姓名,将涉及的关系是
A.
S
B.
SC，C
C.
S，SC
D.
S，C，SC
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【单选题】Which of the following is NOT true of working class Americans?
A.
They work long hours.
B.
They live from paycheck to paycheck.
C.
They want to save money for presents.
D.
They don't want to be healthy eaters
查看完整题目与答案
【单选题】Which of the following is cited as an expression of American pessimism?
A.
America is no longer a mighty and good-hearted giant.
B.
Bill O'Reilly and his like are popular among the public.
C.
Americans consider their houses as pots of lead.
D.
Most Americans think the Iraq war was not worth the fighting.
查看完整题目与答案
【单选题】Which of the following statements can best summarize the main idea of Donnys book?
A.
As long as you think, you may succeed.
B.
As long as you work hard, you may succeed.
C.
Women are superior to men in jobs.
D.
Only genius can achieve success.
查看完整题目与答案
【判断题】《 2000通则》中有13个贸易术语,而《2010通则》中有11个贸易术语,且从E组到D组,卖方的责任义务是依次递进的,买方的责任义务是依次递减的。
A.
正确
B.
错误
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【单选题】If he ______ his legs in the last training, he ______ in the coming World Cup, which he has been longing to compete in. [     ]
A.
hadn't hurt; would join
B.
didn't hurt; would have joined
C.
didn't hurt; would join
D.
hadn't hurt; would have joined
查看完整题目与答案
【单选题】Which of the following is Dr. Bruce McEwen inclined to emphasize by saying 'But in the long run these hormones can have a harmful effect on the body and brain'?
A.
a person's memory is determined by the level of hormones in his body.
B.
stress hormones have lasting positive effects on the brain.
C.
short bursts of stress hormones enhance memory function.
D.
a person's memory improves with continued experience of stress.
查看完整题目与答案
【单选题】木星是太阳系中体积最大的行星,人们对它充满无限遐想。为了解木星的形成、进化和结构等,在最新航天科技的支持下,美国于 2011年8月发射新的木星探测器“朱诺”。对木星的科学探测活动将进一步佐证
A.
① 人类的好奇、兴趣和遐想是推进有关木星认识的直接动力 ② 现代科技和探测手段的发展推动有关木星认识的深化发展
B.
② 现代科技和探测手段的发展推动有关木星认识的深化发展 ③ 实践发展提出的客观需要是推进有关木星认识的根本动力
C.
② 现代科技和探测手段的发展推动有关木星认识的深化发展 ④ 严密的逻辑和精心的准备能确保木星探测实践的如期成功
D.
③ 实践发展提出的客观需要是推进有关木星认识的根本动力 ④ 严密的逻辑和精心的准备能确保木星探测实践的如期成功
查看完整题目与答案
【单选题】木星是太阳系中体积最大的行星，人们对它充满无限遐想。为了解木星的形成、进化和结构等，在最新航天科技的支持下，美国于2011年8月发射新的木星探测器“朱诺”。对木星的科学探测活动将进一步佐证( )。 ①人类的好奇、兴趣和遐想是推进有关木星认识的直接动力 ②现代科技和探测手段的发展推动有关木星认识的深化发展 ③实践发展提出的客观需要是推进有关木星认识的根本动力 ④严密的逻辑和精心的准备能确保木星探测实...
A.
①②
B.
②③
C.
②④
D.
③④
查看完整题目与答案
相关题目：
【单选题】Which of the following is the disadvantage mentioned in the passage?
A.
Less care.
B.
More loneliness.
C.
Less freedom.
D.
Less happiness.
查看完整题目与答案
【单选题】假定学生关系S(SNO,SNAME,SEX,AGE),课程关系是C(CNO,CNAME,TEACHER),学生选课关系SC(SNO,CNO,GRADE)。要查找选修“数据库”课程的“男”学生姓名,将涉及的关系是
A.
S
B.
SC，C
C.
S，SC
D.
S，C，SC
查看完整题目与答案
【单选题】Which of the following is NOT true of working class Americans?
A.
They work long hours.
B.
They live from paycheck to paycheck.
C.
They want to save money for presents.
D.
They don't want to be healthy eaters
查看完整题目与答案
【单选题】Which of the following is cited as an expression of American pessimism?
A.
America is no longer a mighty and good-hearted giant.
B.
Bill O'Reilly and his like are popular among the public.
C.
Americans consider their houses as pots of lead.
D.
Most Americans think the Iraq war was not worth the fighting.
查看完整题目与答案
【单选题】Which of the following statements can best summarize the main idea of Donnys book?
A.
As long as you think, you may succeed.
B.
As long as you work hard, you may succeed.
C.
Women are superior to men in jobs.
D.
Only genius can achieve success.
查看完整题目与答案
【判断题】《 2000通则》中有13个贸易术语,而《2010通则》中有11个贸易术语,且从E组到D组,卖方的责任义务是依次递进的,买方的责任义务是依次递减的。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If he ______ his legs in the last training, he ______ in the coming World Cup, which he has been longing to compete in. [     ]
A.
hadn't hurt; would join
B.
didn't hurt; would have joined
C.
didn't hurt; would join
D.
hadn't hurt; would have joined
查看完整题目与答案
【单选题】Which of the following is Dr. Bruce McEwen inclined to emphasize by saying 'But in the long run these hormones can have a harmful effect on the body and brain'?
A.
a person's memory is determined by the level of hormones in his body.
B.
stress hormones have lasting positive effects on the brain.
C.
short bursts of stress hormones enhance memory function.
D.
a person's memory improves with continued experience of stress.
查看完整题目与答案
【单选题】木星是太阳系中体积最大的行星,人们对它充满无限遐想。为了解木星的形成、进化和结构等,在最新航天科技的支持下,美国于 2011年8月发射新的木星探测器“朱诺”。对木星的科学探测活动将进一步佐证
A.
① 人类的好奇、兴趣和遐想是推进有关木星认识的直接动力 ② 现代科技和探测手段的发展推动有关木星认识的深化发展
B.
② 现代科技和探测手段的发展推动有关木星认识的深化发展 ③ 实践发展提出的客观需要是推进有关木星认识的根本动力
C.
② 现代科技和探测手段的发展推动有关木星认识的深化发展 ④ 严密的逻辑和精心的准备能确保木星探测实践的如期成功
D.
③ 实践发展提出的客观需要是推进有关木星认识的根本动力 ④ 严密的逻辑和精心的准备能确保木星探测实践的如期成功
查看完整题目与答案
【单选题】木星是太阳系中体积最大的行星，人们对它充满无限遐想。为了解木星的形成、进化和结构等，在最新航天科技的支持下，美国于2011年8月发射新的木星探测器“朱诺”。对木星的科学探测活动将进一步佐证( )。 ①人类的好奇、兴趣和遐想是推进有关木星认识的直接动力 ②现代科技和探测手段的发展推动有关木星认识的深化发展 ③实践发展提出的客观需要是推进有关木星认识的根本动力 ④严密的逻辑和精心的准备能确保木星探测实...
A.
①②
B.
②③
C.
②④
D.
③④
查看完整题目与答案