下列哪个不属于公债的特征（）.
A.自愿性
B.灵活性
C.有偿性
D.固定性
参考答案：D
Food products containing chocolate are subject to a () of up to 35 percent when imported to Japan.
A. test
B. tariff
C. souvenir
D. shipment
下列程序的执行结果是______。 m1=1 m2=1 Do Whilem2＜＞6 m1=m1*m2 m2=m2+1 Loop Printm1
