男，32岁。呼吸困难3～4年，查体：负性心尖搏动，心尖区舒张期杂音及开瓣音。该患者负

间接筹资的基本方式是______

A．发行股票
B．发行债券
C．银行借款
D．投入资本

煤炭资源储量

If a ship station relays a DSC distress call to an appropriate coast station, it means that（）.

A.the ship has received the DSC distress call on a HF frequency

B.the coast station concerned has not acknowledged it within 5 minutes

C.the ship will take command of search and rescue in 5 minutes

D.A and B

对于城市桥梁桥面的排水设施处理时，应注意的问题有哪些？

Y.1231与G.902相比，具有哪些优势？