患者女性，53岁。椎管内阻滞下行“腹腔镜胆囊切除术”。术中患者出现血压下降的主要原因

Japan says its Prime Minister promised to provide the world with "maximum transparency" 

about ____ accident at the Fukushima nuclear power plant during _____ telephone call. [ ]

A. the; a               

B. the; the          

C. an; the            

D. an; a

When the import declaration is conducted, the person in charge of the matter should submit, together with the import declaration form, the following commercial and shipping documents, they are ______.

A. Invoice and B/L only
B. Invoice, B/L, Packing list only
C. Invoice, B/L, Packing list, the duty exemption certificate issued by Customs
D. none of the above

如何减少接种过程中造成的污染？

选煤在国民经济中的地位？

应怎样选择润滑油？