The word "capillary", as used throughout the text, means "______".
A. objects having a similar size and shape to hairs
B. blood vessels
C. any tubular object having a small internal diameter
D. contact brushes in microchips
查看答案
It can be learned from Paragraph 4 that______.
A. private oil companies, non-OPEC countries and governments are powerless
B. OPEC needs to increase the refining capacity
C. everyone should be more focused on geopolitics
D. OPEC can not be solely responsible for increasing refining capacity
共阴极的半导体数码管应该配用高电平有效的数码管译码器。()
同相比例运算电路中集成运算放大器的反相输入端为虚地。()
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