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【判断题】
TTC (氯化三苯基四氮唑)染色法检测种子活力,具有生活力的种子,胚及胚乳均能染成红色。( )
A.
正确
B.
错误
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【简答题】Spot Dictation.mp3: Early 1 from Britain brought April 2 to their American 3 . Americans still play tricks on each other on April Fools' Day. Children put 4 on the back of their frieds that read, "Kic...
【简答题】2009-9上 spot dictation.mp3:
【单选题】下列属于蛋白质三级结构的是:
A.
α-螺旋
B.
Β-折叠
C.
亮氨酸拉链
D.
结构域
【判断题】α,β-不饱和醛中,由于羰基氧的吸电子作用在共轭体系内传递,使β-碳也带部分正电荷,因此,亲核试剂既可进攻羰基碳,发生1,2-加成,也可进攻 β-碳,发生1,4-加成。
A.
正确
B.
错误
【判断题】甘特图实际上是一幅任务时间表。
A.
正确
B.
错误
【单选题】About the tendency of food in America, which of the following ones is NOT true?
A.
quicker
B.
tastier
C.
cheaper
D.
Smaller
【简答题】Dictation.mp3: Professors (1)______ outside of the classroom, (2)________ . A professor (3)________ but (4)______ for(5)______ . The professor (6)_______ but (7)_______. Professors (8)__________; th...
【单选题】临时性填方边坡,当填方的高度在10m以内,可采用的边坡坡度为
A.
1:0.33
B.
1:0.25
C.
1:1
D.
1:1.5
【简答题】简述恶意软件的危害?
【简答题】Dictation-U11-2.mp3: Take(1)______. Mentally (2)______. Instead of (3)______, learn to look for the love, (4)______. Try (5)_______. If (6)_______, you may realize that (7)_______, fear —even lov...
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