男性，58岁，心肌梗死史1年，每天吸烟约10支，近一周劳累时发作胸痛，每次持续5～1

受益人收取国内信用证款项的方式有几种？

The days are gone________you can breathe fresh，unpolluted air or drink clean, unpolluted water in the countryside.

A．when　

B．that

C．where　

D．which

The first prize winner _______, John was so disappointed that he felt unwilling to know the rest of the results.

A．announcing

B．announced

C．having announced

D．had been announced

油浸式消弧线圈绕组应清洁，无倾斜、位移，导线辐向无明显弹。