用碱性焊条焊接时,因在焊条药皮中含有的氟化物质放出(),所以比酸性焊条焊接时对工人健康的危害大。
A.CaCO3
B.CO气体
C.CO2气体
D.有毒气体
参考答案:B
肝昏迷()
A.呼气有氨味
B.呼气有肝腥味
C.呼吸有烂苹果味
D.呼吸有刺激性大蒜味
E.呼气有浓烈酒味
Peter is considering two bonds:
Bond A yield 10%
Bond B yield 7 %
Using Bond B as the reference bond, calculate the absolute yield spread.()
A. -3.0%.
B. 0%.
C. 3%.