crack表示中文（）。

[名词解释] 裂缝（crack；fissure）

[单选题]thick表示中文（）。A . 厚度B . 长度C . 光洁度

[单选题]turning表示中文（）。A . 磨削B . 车削C . 刨削

[单选题]tube表示中文（）。A . 管子B . 圆棒C . 线材

[单选题]loop表示中文（）。A . 卷取机B . 张力C . 活套

[单选题]A． crack in a cylinder liner can be caused byA．worn piston ringsB．installation of undersized sealing ringsC．operating the engine at low loadsD．restricted cooling water passages

[单选题]A．) a fish to fryB．) a nut to crackC．) a song to singD．) an axe to grind

[单选题]22． What does the underlined word "cracks" mean in the text?A．缝隙B．表面C．夹层D．底部

[单选题]My watch fell down on the ground and there was a hairline crack in the( )of

[单选题]My watch fell down on the ground and there was a hairline crack in the( )of