题目内容

The Planck length =___________________m.

A. 1.616199(97)×10^−32
B. 1.616199(97)×10^−35
C. 1.616199(97)×10^−38
D. 1.616199(97)×10^−40

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One inch = _______________ nanometers.

A. 21,400,000
B. 23,400,000
C. 25,400,000
D. 27,400,000

A sheet of newspaper is about _________ nanometers thick.

A. 50,000
B. 80,000
C. 100,000
D. 120,000

To give you an idea of how small that is, it would take ____ hundred 100 nanometer particles side by side to match the width of a human hair.

A. 3
B. 5
C. 7
D. 8

At9th-17thcenturies,glowing,glittering"luster"ceramicglazesusedintheIslamicworld,andlaterinEurope,containedsilveror________orothermetallicnanoparticles.

A. magnesium
B. gold
C. copper
D. iron