冻土器一般安装在直管地温场中40cm深层地温表的东边,相距约50cm。()
参考答案:错
You have been late for two hours; otherwise, we the whole design. [ ]
A.have fulfilled
B.fulfilled
C. should have fulfilled
D.will have fulfilled
人类女性染色体为(),男性染色体为(),其中较长的染色体是()。
A.XX;XY;Y染色体
B.XY;XX;Y染色体
C.XX;XY;X染色体
D.XY;XX;X染色体