【单选题】When people try to explain a phenomenon, their goal is
A.
to convince other people that the phenomenon occurred.
B.
to increase their understanding of why the phenomenon occurred.
C.
to predict that a phenomenon will occur.
D.
to establish that a phenomenon will occur.
【单选题】What happens when people try to quit smoking gradually ?
A.
They find it even more difficult.
B.
They are simply unable to make it.
C.
They show fewer withdrawal symptom.
D.
They feel much less pain in the process.
【单选题】What happens when people try to quit smoking gradually?
A.
They find it even more difficult.
B.
They are simply unable to make it.
C.
They show fewer withdrawal symptoms.
D.
They feel much less pain in the process.
【判断题】(末考:基础知识部分)在关系中,如果关系的主键是X且X决定非主属性Y,则称Y完全依赖于关系的主键。( )
【判断题】(末考:基础知识部分)在关系中,如果主属性X决定非主属性Y,则称Y完全依赖于关系的主键。( )
【单选题】Problems can_____when people try to defend themselves in court without help from a lawyer.
【判断题】在关系中,如果主属性X决定非主属性Y,则称Y完全依赖于关系的主键。( )
【判断题】测定混凝土的抗压强度时,试件干燥时的强度大于吸水饱和时的强度。()
【单选题】When people try to call their doctors during off hours, they usually hear a recorded message instructing them to go to the ________ room in the of a cr.