艾肯机的速度受到了限制，因为它使用的是继电器而不是电子器件。Aiken’s machine was limited in speed rather than electronic devices. A: using relays B: by its use of relays C: because using relays D: because of relay’s use

33. This is due to () use of relays rather than electronic devices. A: its B: their C: our D: his

Please answer this question. A: Short circuit protection B: Overload protection. C: Under voltage protection. D: Thermal relays protection.

Choose the correct word for the definition: a person who inspects switches and tracks, and relays signals in the yard A: mechanic B: porte C: switchman

The Water Prize is an international award that______outstanding contributions towards solving global water problems. A: recognizes B: requires C: releases D: relays

The Water Prize is an international award that ______ outstanding contributions towards solving global water problems. A: recognizes B: B. requires C: C. releases D: D. relays