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【多选题】
下列说法中，符合精神分析理论关于心理动力观点的是（）。A.
一切心理动力来源于人类的性本能
B.
力比多不是个体惟一心理动力
C.
自我保存本能是个体惟一心理动力
D.
个体保存和种族延续两种本能同时为心理动力
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【简答题】把单位时间内通过某一导体横截面的电荷量定义为 (简称电流),用 来表示。
【简答题】A．The Moon has no water B．The Moon's materials came from Earth's core C．The Moon's core differs from its suce D．The Moon contains little iron
【单选题】The moon , we came to the foot of the mountain.
A.
appeared
B.
appears
C.
appearing
D.
have appeared
【单选题】When should the man pay the fees?
A.
Within 24 hours of registering.
B.
One week before the designated registration date.
C.
24 hours before the registration date.
D.
After he gets a letter from university financial officer.
【单选题】Supposing 1 million leukemia cells were killed after 24 hours of exposure to radio waves, how many healthy cells would be killed under the same condition?
A.
1.2 million.
B.
1.4 million.
C.
0.8 million.
D.
2 million.
【单选题】In the first 24 hours after abandoning a vessel, water should be given only to personnel who are ______.
A.
sick or injured
B.
wet
C.
Awake
D.
thirsty
【简答题】旅游市场营销的研究中用动态分析方法的原因是：
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