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1993年试题(国外英文资料)
1993年试题
Personal arrangement, feel very good, upload to the library, and share with you
1993 questions
(Hunan, Yunnan and Hainan questions)
Volume 1 (69 total of multiple-choice questions)
Matters needing attention:
1. answers before Volume 1
Candidates must be his name, ticket number, test subjects with a pencil scrawled on the sheet.
2. select the answer after every day
With a pencil on the answering card corresponding to the answer to the question of Black Label
Change if necessary
Clean with an eraser
Take with other answers
You cant put it on the examination paper
3. the examination is over
The invigilator will collect the test paper and the answer sheet
First, the 13 items every day; 3
A total of 39 points. The four options for each question there are only one is correct.
1., two electrons are injected into the same uniform magnetic field at the initial velocity of different sizes along the direction perpendicular to the magnetic field. R1 and R2 are the radius of motion of these two electrons
T1 and T2 are their cycles of motion
be
(A) r1=r2
T1 = T2 (B) R1 = R2
T1 = T2
(C) r1=r2
T1=T2 (D) R1 = R2
T1=T2
2. geostationary satellites are man-made earth satellites that do not move relative to the ground
(A) it can be just above the ground
And the distance from the center of the earth can choose different values as needed
(B) it can be just above the ground
But the distance from the center of the earth is certain
(C) it can only be above the equator
But the distance from the center of the earth can choose different values as needed
(D) it can only be above the equator
And the distance from the center of the earth is certain
3. the coil with a self inductance of L and a variable capacitor C make up the tuning circuit of the radio so that the radio can receive all broadcasts of the f1=550 kHz to f2=1650 kHz range
The ratio of the variable capacitor to the capacitor C1 of the F1 and the capacitance C2 corresponding to the F2 is
4. if the half-life of the element A is
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