Which of the following attributive clauses can be translated into adverbial clauses in Chinese?

A modem is a device which connects a computer via telephone lines to other computers.
B. Space and oceans are the new world which scientists are trying to explore.
C. A seal that softens with temperature or fluid contact can hurt a hydraulic system two ways.
D. For any machine whose input force and output force are known, its mechanical advantage can be calculated.