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国家开放大学土木工程力学（本）
影响线的横坐标是单位荷载的位置。
判断题 (3 分) 3分
A.对
B.错
外界干扰力既不改变体系的自振频率，也不改变振幅。
判断题 (3 分) 3分
A.对
B.错
由于弱阻尼，结构的自由振动不会衰减。
判断题 (3 分) 3分
A.对
B.错
具有集中质量的体系，其振动自由度就等于其集中质量数。
判断题 (3 分) 3分
A.对
B.错
图示体系有3个振动自由度。
判断题 (3 分) 3分
A.对
B.错
结构的自振频率与质量、刚度及荷载有关。
判断题 (3 分) 3分
A.对
B.错
结构的自振频率与结构的刚度及动荷载的频率有关。
判断题 (3 分) 3分
A.对
B.错
A. Does it cost the same for every household?
B. You can pay right here, on the Internet!
C. Just go ahead.
D. We do for the live Cable TV programs.
E. Exactly, even digital boxes.
Liu Hui: Gordon, may I ask you a question?
Gordon: Hi, Liu Hui.
回答
.
Liu Hui: Do I need to pay for a TV license if I only watch TV online in the UK?
Gordon: Yes, indeed. You need to be covered by a TV license if you watch or record programs as they.re being shown on TV or live on an online TV service.
Liu Hui: Including watching TV on computers and mobile phones?
Gordon:
回答
. It is the law.
Liu Hui: I see. How much is the license fee?
Gordon: It costs ￡145.50 for a color TV license and ￡49.00 for a black and white TV license.
Liu Hui: That.s a lot of money for a year.
回答
?
Gordon: It costs the same for all applicants under 75. When you reach the age of 75, you may apply for a free Over 75 TV License.
Liu Hui: I see.
Gordon: Do you need such a license in China?
Liu Hui:
回答
.
Gordon: Oh, it sounds similar. But for BBC, the license fee is the main source of income. There is no advertising on the BBC channels.
Liu Hui: By the way, where should I go to pay for my license?
Gordon:
回答
.
Liu Hui: Well, sure! Thank you!
判断题 (3 分) 3分
A.对
B.错
外界干扰力既不改变体系的自振频率，也不改变振幅。
判断题 (3 分) 3分
A.对
B.错
由于弱阻尼，结构的自由振动不会衰减。
判断题 (3 分) 3分
A.对
B.错
具有集中质量的体系，其振动自由度就等于其集中质量数。
判断题 (3 分) 3分
A.对
B.错
图示体系有3个振动自由度。
判断题 (3 分) 3分
A.对
B.错
结构的自振频率与质量、刚度及荷载有关。
判断题 (3 分) 3分
A.对
B.错
结构的自振频率与结构的刚度及动荷载的频率有关。
判断题 (3 分) 3分
A.对
B.错
A. Does it cost the same for every household?
B. You can pay right here, on the Internet!
C. Just go ahead.
D. We do for the live Cable TV programs.
E. Exactly, even digital boxes.
Liu Hui: Gordon, may I ask you a question?
Gordon: Hi, Liu Hui.
回答
.
Liu Hui: Do I need to pay for a TV license if I only watch TV online in the UK?
Gordon: Yes, indeed. You need to be covered by a TV license if you watch or record programs as they.re being shown on TV or live on an online TV service.
Liu Hui: Including watching TV on computers and mobile phones?
Gordon:
回答
. It is the law.
Liu Hui: I see. How much is the license fee?
Gordon: It costs ￡145.50 for a color TV license and ￡49.00 for a black and white TV license.
Liu Hui: That.s a lot of money for a year.
回答
?
Gordon: It costs the same for all applicants under 75. When you reach the age of 75, you may apply for a free Over 75 TV License.
Liu Hui: I see.
Gordon: Do you need such a license in China?
Liu Hui:
回答
.
Gordon: Oh, it sounds similar. But for BBC, the license fee is the main source of income. There is no advertising on the BBC channels.
Liu Hui: By the way, where should I go to pay for my license?
Gordon:
回答
.
Liu Hui: Well, sure! Thank you!