要实现RTU与无线载荷通讯之前,需要先配置一下RTU内部子网掩码。()
参考答案:错
The boy is sitting ______. the running car. Suddenly he saw a dog is standing ______the care on the
road. [ ]
A. in the front of; in front of
B. in front of; in the front of
C. at the front of; at front of
D. in the front of; in the front of
假定某高等生物体细胞内的染色体数是10条,其中染色体中的DNA用3H胸腺嘧啶标记,将该体细胞放入不含有标记的培养液中连续培养2代,则在形成第2代细胞时的有丝分裂后期,没有被标记的染色体数为()
A.5条
B.10条
C.20条
D.40条