国家秘密的密级分为()。
A.绝密、机密二级
B.绝密、机密、秘密、超绝密四级
C.绝密、机密、秘密三级
参考答案:C
下列哪一项检查或症状不支持DKA的诊断()
A.尿糖、尿酮体强阳性
B.血糖多数为16.7~33.3mmol/L,或以上
C.血气分析:CO2结合力降低,pH<735
D.有饥饿感、多汗、心悸、手抖等交感神经兴奋表现
An analyst does research about margin transaction. An investor borrows $8000 to purchase 1000 shares of stock on margin, the price of a share is $20, the investor's leverage ratio is closest to:()
A. 0.40
B. 1.67
C. 2.50