What are the common uses of Chinese seals?

如果密封件安装不正确，可能会发生渗漏。 A: If you install seals incorrectly, leaks can occur through them. B: If you install seals incorrectly, leaks can pass through them. C: Incorrect assembly of seals can result in leaks past them. D: Incorrect assembly of seals can result in leaks via them.

Originally, seals were mostly used as a symbol of family.

中国大学MOOC: What are the common uses of Chinese seals?

A seals a brake pipe. A: dummy coupling B: coupled hose

Seals combine several art forms including calligraphy, sculpture, painting and Kungfu.

There are ______ seals in Canadian Parliament. A: 303 B: 304 C: 305 D: 306

freight car(s) / passenger car(s)A A _______________ seals a brake pipe.B Brake pipes are connected by a _________________.

Polar bears live mostly on () sea ice,which they use as () platform for hunting seals. A: a; a B: a; the C: 不填; a D: the; 不填

Polar bears live mostly on<br/>sea ice, which they use as platform for hunting seals. ( <br/>) A: mostly B: sea ice C: as platform D: for hunting