【简答题】配制半固体培养基时琼脂的添加量为 ( )
【单选题】—Does Dan like onions? —Yes, ________. He thinks they are healthy. [ ]
【简答题】In 2009, Dan Black was hit by a car in his hometown of Chepstow, Wales, as he was biking to his job at a grocery store. _41_ During his recovery, he suffered a stroke that rendered his right arm usele...
【单选题】听力原文:M: Did Gloria's boyfriend Dan graduate from the same university as you? W: Yes. He has been practising law in New York after he received his law degree and passed the bar examination. Q: What's D...
【单选题】测得邻苯二甲酸的 pKa1=2.89,pKa2=5.54 。则 Ka1,Ka2 值应表示为 :
A.
K a1 = 1 ´ 10 - 3 , K a2 =3 ´ 10 - 6
B.
K a1 = 1.3 ´ 10 - 3 , K a2 =2.9 ´ 10 - 6
C.
K a1 = 1.31 ´ 10 - 3 K a2 =2.92 ´ 10 - 6
D.
K a1 = 1.312 ´ 10 - 3 , K a2 = 2.921 ´ 10 - 6
【单选题】配制半固体培养基时,琼脂的添加量为( )。
【单选题】Dan was amused. He must have ______.
【单选题】---- Dan hurt his leg when he was playing football. ---- ________
A.
I'm not sure about it!
B.
No, I don't believe it!
C.
I am sorry to hear that.
【简答题】某个注册会计师以前是这个被审单位的董事,但是他主管的是人事工作与财务工作没有任何联系,他回去审影不影响独立性?