他总是很细心。
A. He is always careful.
B. He always works together with others.
C. He likes to work alone.
D. He doesn't take the readings himself.
做维修工作。
A. Take the readings.
B. Watch the operation of the machines.
C. Do some maintenance work.
D. Have a rest.
他很乐于助人。
A. He is helpful.
B. He dislikes working with others.
C. He is unhelpful.
D. He is careless.
税收作为国家财政收入的最主要形式，与其他财政收入的方式相比，具有三个明显的基本特征是。
A. 强制性
B. 无偿性
C. 固定性
D. 共同性
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