甲公司2005年3月在上年度财务会计报告批准报出后，发现2003年9月购入并开始使用的一台管理用固

A net forceacts on object A, and a net forceacts on object B. The mass of object B is twice the mass of object A, and the acceleration of object B is twice that of object A. Is it true thatis four times of？

An object is thrown up with an initial speed, the air resistance is, where m is the mass of the object and k is a constant, what are (1) the maximum height the object can reach, and (2)the magnitude of the velocity when the object returns the Earth？ (Assume the gravitational acceleration is a constant)

A．mg

B．mv

C．mv/t

D．0

E．None of these answers is correct

The emergence of the mass media and of specialized periodicals showed that ______.

A．standards of literacy had declined

B．readers' interests had diversified

C．printing techniques had improved

D．educationalists' attitudes had changed

The emergence of the mass media and of specialized periodicals showed that ______.

A．standards of literacy had declined

B．readers' interests had diversified

C．printing teehniques had improved

D．educationalists' attitudes had changed

A、Both objects can have the same magnitude of momentum.

B、Object 1 has a momentum of greater magnitude than Object 2.

C、The magnitude of the momentum of Object 2 is four times that of Object 1.

D、All the statements are false.

E、All the statements are true.

Allen had a good taste on classical novels. After graduation, he became a() for a magazine.

A、critical

B、criticism

C、hypocrite

D、critic

A、Both objects can have the same kinetic energy.

B、One object has 0.707 times the kinetic energy of the other.

C、One object has twice the kinetic energy of the other.

D、One object has 4 times the kinetic energy of the other.

E、None of the others.

The emergence of the mass media and of specialized periodicals showed that ______.

A．standards of literacy had declined

B．readers' interests had diversified

C．printing techniques had improved

D．educationalists' attitudes had changed

The emergence of the mass media and of specialized periodicals showed that ______.

A．standards of literacy had declined

B．readers' interests had diversified

C．printing techniques had improved

D．educationalists' attitudes had changed