. -----What makes him happy? -----_____a

搜题请搜索小程序“爱下问搜题”

问题选择题

. -----What makes him happy?

-----_____a prize in the computer contest.(which of the following are right)

A Because of winning B. For be won C. Wining D. His wining

答案

答案：D

单项选择题 A型题

有关“R质粒及其编码的耐药性”的叙述，哪一项是错误的（）

A.R质粒多为闭合环状双链DNA

B.含有一种或多种耐药基因

C.主要通过接合方式在细菌间转移

D.耐药性能够在异种细菌间转移

E.耐药性稳定

单项选择题

以下程序的输出结果是
main()

int a=20;
printf("%d,%o,%x\n",a,a,a);

A) 20, 024, 0x14
B) 20, 24, 14
C) 20, 0x14, 024
D) 20, 20, 20