This new method not only saves time but also saves energy（）operating on two batteries instead of four. in。 by。 on。 for。
在新生儿窒息复苏时实施胸外按压的指征有哪些？
This Rule does not relieve the give-way vessel（）her obligation to keep out of the way. out。 off。 from。 of。
This system is only applicable（）those ships which are anchored at the roadstead waiting for entry. to。 for。 with。 o。
焙烧的目的是什么？
在建立独立的直角平面坐标系时，一般将坐标原点选在测区（）以外的适当位置。
