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【单选题】
关于质点这一物理模型,下列说法中错误的是( )。
A.
质点是具有质量而可忽略其形状、大小的几何点
B.
质点是物理学研究中采用的一种抽象化的“理想模型”
C.
比较汽车和摩托车的速度大小时,就可以把它们看成是质点
D.
在研究杠杆平衡(或转动)现象时,就可以把杠杆看成是质点
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参考答案:
举一反三
【单选题】What is the first step toward improving one's ability in nonverbal communication?
A.
More practice for aommunication
B.
Investigation in communication
C.
Recognizing the power of nonverbal communication
D.
Recognizing the nonverbal cues
【判断题】用六个支承点定位是用合理分布的完全定位。
A.
正确
B.
错误
【单选题】Glycosylation, a post-translational modification to proteins, occurs in the
A.
ER
B.
proteasome.
C.
mitochondria
D.
none of the above
【单选题】What are not the characteristics of nonverbal communication ?()
A.
Nonlinguistic and ambiguous
B.
Unstructured and subconscious
C.
Structured and continuous
D.
Natural and uncontrollable
【单选题】When a rigid body undergoes translational motion due to external forces, the translational equations of motion (EoM) can be expressed for _________.
A.
the center of rotation
B.
the center of mass
C.
any arbitrary point
D.
All of the above
【单选题】What is the nonverbal language of feeling powerless?
A.
Opening up
B.
Close up
C.
Jump
D.
Run
【多选题】What are functions of nonverbal communication?
A.
Substituting
B.
Contradicting
C.
Interrupting
D.
Repeating
【简答题】co-translational translocation (共翻译转运)
【单选题】The same translational skill is used in the following E-C translational versions except ______ .
A.
E: We are enemies of all wars, but above all of dynastic wars. C: 我们反对一切战争,特别是反对王朝战争。
B.
E: He is a lover of Chinese painting. C: 他爱好中国画。
C.
E: He was a voracious reader, spending much of his days and evenings devouring boo ks. C: 他读起书来,不分昼夜,废寝忘食。
D.
E: He was always smartly dressed. C: 他穿着一直很考究。
【单选题】Which of the following cannot apply for a body in translational equilibrium?
A.
ΣFx = 0
B.
Constant speed
C.
Increasing speed
D.
ΣFy = 0
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