Mark _____ make the bed. [ ]
A. has to
B. have to
C. have
A
PAGE原理是凝胶介质形成立体多孔网状结构,分离条带上边是()
A.质粒
B.噬菌体
C.大分子
D.DNA
E.小分子
以下程序的执行结果是______。#include<iostream.h>#include<iomanip.h>void main() cout.fi1(’*’);cout.width(10);cout<<setiosflags(ios::hex)<<160<<endl;cout.width(8);cout<<160<<endl;cout.width(4); cout<<160<<endl;