【判断题】WWW是World Wide Web的缩写,也称作万维网或环球信息网,简称Web。
【单选题】一级公路土方路基下路床(路槽底面以下30~80cm范围)的压实度标准为( )。
【简答题】A.J-(R-S) B.R-(R-S) C.(A-OUS D.RU(R-S)
【单选题】一级公路土方路基下路床(路槽底面以下30~80cm)的压实度标准为( )。
【单选题】一级公路土方路基下路床(路槽底面以下30~80cm范围)的压实度标准为 。
【单选题】Chargaff's rules state that ( ).
A.
in the DNA molecule the number of adenines = number of thymines and the number of guanines = number of cytosines
B.
in the DNA molecule the number of guanines and cytosines = the number of adenines and thymines
C.
the ratio of (A + T)/(G + C) is constant for a species