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【单选题】
蓄电池放电过程为 。A.
蓄电池与外界电源相联而将电能转化为化学能储存起来
B.
发电机向蓄电池充电
C.
蓄电池硫化
D.
蓄电池的化学能转化为电能而供电
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举一反三
【单选题】下列Python程序的运行结果是 a=map(lambda s:s**2,(1,3,5)) for i in a:print(i,end=' ')
A.
1 3 5
B.
1 9 25
C.
2 6 10
D.
1 1 1
【单选题】Before operating the new equipment, everyone must read the ( ) carefully.
A.
instruction book
B.
hand book
C.
log book
【简答题】Read the passage and answer the following 5 questions: Before renting the equipment from U-Haul, be clear about the following information. 1. I understand that this equipment must be returned to the s...
【单选题】下列Python程序的运行结果是( )。 # dic = { 'a' : 33 , 'b' : 21 , 'c' : 9 } for k,v in dic.items(): if v> 20 : print (k) #
A.
None
B.
a b c
C.
a b
D.
a
【简答题】下列程序的运行结果是（）def two_len(**kwargs): for k, v in kwargs.items(): if len(v) > 2: kwargs[k] = v[:2] return kwargsprint(two_len(x='12', y='345', c='byw'))
【单选题】下列Python程序的运行结果是 for index, value in enumerate ( range (10, 15)): print ((index, value), end= ' ' )
A.
(10, 15) (11, 16) (12, 17) (13, 18) (14, 19)
B.
(0, 10) (1, 11) (2, 12) (3, 13) (4, 14)
C.
(1, 10) (2, 11) (3, 12) (4, 13) (5, 14)
D.
(0, 0) (1, 1) (2, 2) (3, 3) (4, 4)
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