With the system in cell phones, what kind of information could people receive？A．Natural di

In engines with system, the lubricating oil can be added to the engine through the filling

The basic unit of software that the operating system deals with in scheduling the work don

Warning: Holding a cell phone against your ear or storing it in your pocket may be hazardo

Whats "cell phone" which is in American English in British English？A．Cellular phone.B．Mobi

No one can use cell phones in any areas at the hospital ______ equipment might be affected

According to the passage, cell phones were launched______.A．in the late 1970sB．between 195