【多选题】一般跟单信用证与备用信用证的主要区别是( )
【判断题】从2019年4月1日起,一般纳税人发生增值税应税销售行为或者进口货物,原适用16%税率的,税率调整为13%;原适用10%税率的,税率调整为9%。( )
【单选题】Raisin bran and milk are complements. An increase in the price of raisins will
A.
increase consumer surplus in the market for raisin bran and decrease producer surplus in the market for milk.
B.
increase consumer surplus in the market for raisin bran and increase producer surplus in the market for milk.
C.
decrease consumer surplus in the market for raisin bran and increase producer surplus in the market for milk.
D.
decrease consumer surplus in the market for raisin bran and decrease producer surplus in the market for milk.
【单选题】Raisin bran and milk are complementary goods. A decrease in the price of raisins will
A.
increase consumer surplus in the market for raisin bran and decrease producer surplus in the market for milk.
B.
increase consumer surplus in the market for raisin bran and increase producer surplus in the market for milk.
C.
decrease consumer surplus in the market for raisin bran and increase producer surplus in the market for milk.
D.
decrease consumer surplus in the market for raisin bran and decrease producer surplus in the market for milk.
【判断题】ZigBee是一种低传输速率的短距离无线通信技术。
【简答题】下列程序判断字符串s 是否对称,对称则返回1,否则返回0;如 f("abba")返回1,f("abab")返回0; 注:(1)和(2)和(3)三个答案之间用空格分隔,每个答案是一个字符。