【单选题】销售与收款业务循环中,用来表示由于销售退回或经批准折让而引起的应收账款减少的凭证是( )。
【单选题】导流隧洞中的弯道转弯半径以大于()倍隧洞直径为宜。
【单选题】某双链DNA纯样品中含有20%的A,则该样品中G的含量为
【单选题】In Ion,Socrates stressed that the inspiration of the poets comes from the ____.
【单选题】In Ion Socrates stressed that the inspiration of the poets comes from the ____.
【单选题】导流隧洞中的弯道转弯半径以大于____倍隧洞直径为宜。
【单选题】The renewable energy research lost support from governments in the early 1990s because ______.
A.
skeptics were becoming doubtful about the efficiency of renewables
B.
renewables could not meet the increasing energy needs of the society
C.
it was much easier and cheaper to use oil than before
D.
the investment into the field was not worth its value
【单选题】导流隧洞中的弯道转弯半径以大于( )倍隧洞直径为宜。
【单选题】导流隧洞中的弯道转弯半径以大于()倍隧洞直径为宜。