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【单选题】
下列有关化学用语表示正确的是A.
HClO的电子式：
B.
硫离子结构示意图：
C.
丙醛的结构：CH 3 CH 2 COH
D.
碳酸的电离方程式：H 2 CO 3 2H + ＋CO 3 2 －
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皮皮学刷刷变学霸
举一反三
【单选题】Secured bonds:
A.
Are called debentures.
B.
Have specific assets of the issuing company pledged as collateral.
C.
Are backed by the issuer's bank.
D.
Are subordinated to those of other unsecured liabilities.
E.
Are the same as sinking fund bonds.
【简答题】Bonds secured by the pledge of specific assets are called .
【单选题】Most corporate bonds are:
A.
Mortgage bonds.
B.
Debenture bonds.
C.
Secured bonds.
D.
Callable bonds.
【单选题】Corporate bonds are less risky if they are _________ bonds and municipal bonds are less risky if they are _________ bonds.
A.
secured; revenue
B.
secured; general obligation
C.
unsecured; revenue
D.
unsecured; general obligation
【简答题】鼠疫属于 A ．统计地方性疾病 B ．自然地方性疾病 C ．自然疫源性疾病 D ．环境地方病 E ．地方性疾病
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