shown are the electric field lines for two point charges with a small distance b apart. the ratio q1/q2 equals
Shown are the electric field lines for two point charges with a small distance b apart. The ratio q1/q2 equals
A、3.
B、-3.
C、1/3.
D、-1/3.
Shown are the electric field lines for two point charges with a small distance b apart. The ratio q1/q2 equals
A、3.
B、-3.
C、1/3.
D、-1/3.
A.Su vida en el nuevo barrio.
B.Sus muebles.
C.Su nuevo apartamento.
D.Su trabajo.
The brain controls the other body activities through______.
A.medical devices
B.small electrodes
C.he brain waves
D.the nerve cells
A.amplificador
B.arco
C.cuerda
D.teclado
A.Le
B.Las
C.Lo
D.La
Crustal rocks can be used to predict earthquakes for their ______.
A.conductivity of electricity
B.hardness to be cracked
C.sensitivity to strain
D.magnetic properties
A.amplificador
B.arco
C.cuerda
D.teclado
A modern aircraft ______.
A.is run by electronic computers
B.carries a bigger load of electronic apparatus than pay-load
C.does not need mini-computers at all
D.can carry a bigger pay-load if the electronic apparatus carried by it becomes lighter
A.Le
B.Las
C.Lo
D.La
Which of the following guitars is most likely NOT suitable for classical music?
A.An electric guitar.
B.A solid body guitar.
C.A semi-hollow body guitar.
D.A hollow body or acoustic guitar.
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