【单选题】He had gone away on business and would notreturn to the hotel until the next day—should have to wait till_________I couldthank him for the present.
【单选题】Not until I completed the form that half questions were not relevant to me.A.had I realizedB.I ha
A.
Not until I completed the form____that half questions were not relevant to me. A.had I realized
【判断题】数控机床常用导轨有贴塑导轨、滚动导轨和静压导轨。
【简答题】在PHP中,去除字符串最后面的“,”字符,可以使用【】函数。
【单选题】核酸中核苷酸之间的连接方式是( )P.62西综1997/20西综2002/20
【单选题】以下能够正确退出循环的是( )。
A.
i=10 Do i=i+1 Loop Until i<10
B.
i=1 Do i=i+1 Loop Until i=10
C.
i=10 Do i=i+1 Loop Until i>0
D.
i=1 Do i=i-3 Loop Until i=0
【单选题】下列有关遗传学概念的叙述中,正确的是
A.
杂交后代中只显现出显性性状的现象,叫做性状分离
C.
纯合子的自交后代中不会发生性状分离,杂合子自交后代中不会出现纯合子