举一反三
- The force on the metal plate of parallel plate capacitor is A: longitudinal tension B: lateral pressure C: unable to confirm D: zero
- The shells are secured by means of bearing caps and studs， the necessary clearance being provided by means of （） of different thickness.
- A main bearing consists of two shells which are secured by means of studs and （）.
- The position of the piston parts in relation to each other is secured by means of （） in the crown.
- An instrument that indicates wind direction is known as a(n)（）.
内容
- 0
In a ( ), the oscillations are perpendicular to the direction in which the wave travels. An example is a wave on a string. A: transverse wave B: longitudinal wave
- 1
The gas loads on the engine structure are constrained by means of hydraulically preloaded （） which connect the bed plate， frame sections and cylinder jackets into a single unit. A: connecting rods B: main bearing C: column D: tie rod
- 2
The gas loads on the engine structure are constrained by means of hydraulically preloaded （） which connect the bed plate, frame sections and cylinder jackets into a single unit. A: Aconnecting rods B: Bmain bearing C: Ccolumn D: Dtie rods
- 3
The position of the piston parts in relation to each other is secured by means of （） and a dowel pin in the crown.
- 4
Backing means the wind ___ . A: is changing clockwise in direction B: is changing anticlockwise in direction C: is changing cyclonically or variably in direction D: emains unchanged in direction at the time