O形圈的英文含义是( ) A: O B: service port C: O-ring D: manifold
O形圈的英文含义是( ) A: O B: service port C: O-ring D: manifold
Helen gave her daughter （） A: a ring B: to a ring C: for a ring D: with a ring
Helen gave her daughter （） A: a ring B: to a ring C: for a ring D: with a ring
The Ring of the Nibelung is generally known as the Ring or the Ring Cycle.
The Ring of the Nibelung is generally known as the Ring or the Ring Cycle.
10.What does the ring gesture (you form an "O" by holding the tip of your forefinger to the tip of your thumb) mean in Britain?
10.What does the ring gesture (you form an "O" by holding the tip of your forefinger to the tip of your thumb) mean in Britain?
A ring homomophism f from a ring R onto another ring S is an isomophism if and only if kerf=0.( )
A ring homomophism f from a ring R onto another ring S is an isomophism if and only if kerf=0.( )
In The Fellowship of the Ring, Frodo Baggins inherits the One Ring from Bilbo Baggins, his cousin and guardian.
In The Fellowship of the Ring, Frodo Baggins inherits the One Ring from Bilbo Baggins, his cousin and guardian.
Jack<br/>was reading a book when the phone ____. A: ringing B: ring C: rang D: was ringing E: was ring
Jack<br/>was reading a book when the phone ____. A: ringing B: ring C: rang D: was ringing E: was ring
contractile ring（收缩环）
contractile ring（收缩环）
1.The bell is ring ____ there is a fire.
1.The bell is ring ____ there is a fire.
While watching television, _______. A: the doorbell rang B: we heard the doorbell ring C: there was someone knocking at the door D: the doorbell was ring
While watching television, _______. A: the doorbell rang B: we heard the doorbell ring C: there was someone knocking at the door D: the doorbell was ring