以下哪些方法不可以直接用于基因点突变的检测()
A.原位杂交
B.PCR-RFLP技术
C.DNA芯片技术
D.Southernblotting技术
E.DNA测序
参考答案:A
As everyone knows, the South China Sea is _____ part of China, _____ important part of China,
any other country outside Asia doesn't have _____ say in this issue.
[ ]
A. a, an, /
B. /, an, a
C. a, the, the
D. a, an, /
测井电缆的编织层一般由()绕包而成。
A.塑料
B.橡胶
C.钢丝
D.纤维材料或布带