图示三铰拱,在构件CB上分别作用一力偶M(图3-4a)或力F(图3-4b)。当求铰链A、B、C的约束力时能否将力偶M或为F分别移到构件AC上?为什么?
A.When the Earth was formed.B.The composition of the Earths interior.C.W
A. When the Earth was formed.
B. The composition of the Earths interior.
C. Why molten rock is hot.
D. How often a volcano is likely to erupt.
下列分录中属于简单会计分录的是()。
A. 一借一贷
B. 一借多贷
C. 一贷多借
D. 多借多贷
Passage Three. 听材料,回答下列各题:
A. To review what students know about volcanic activity.
B. To demonstrate the use of a new measurement device.
C. To explain the answer to an examination question.
D. To provide background for the next reading assignment.