题目内容

1 nm = _______ dm.

A. 10^-6
B. 10^-7
C. 10^-8
D. 10^-9

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'_________' is defined as "The length of the path travelled by light in vacuum during a time interval of 1⁄299,792,458 seconds".

A. 1 kilogram
B. 1 meter
C. 1 centimeter
D. 1 mile

1 Norwegian/Swedish mil or myriametre = ________ meters.

A. 1,000
B. 3,000
C. 5,000
D. 10,000

1 angström = _____picometers.

A. 10
B. 50
C. 100
D. 1,000

1angström=_____ meters.

A. 10^-6
B. 10^-8
C. 10^-10
D. 10^-12