更多"[简答题]Summer in Northern Europe is q"的相关试题:
[单选题]A firm's short-term assets and its short-term liabilities are referred to as the firm's:
A. working capital.
B. debt.
C. investment capital.
D. net capital.
E. capital structure.
Difficulty: 1 Easy
Topic: Financial management decisions
Learning Objective: 01-01 Define the basic types of financial management decisions and the role of the financial manager.
[单选题]Northern印迹杂交可以用于
A.快速确定是否存在目的基因
B.不仅可以检测DNA样品中是否某一特定的基因，而且还可以获得基因片段的大小及酶切位点分布的信息
C.检测靶分子是RNA
D.用于基因定位分析
E.用于阳性菌落的筛选
[单选题]RNA印迹(Northern blot)实验可在RNA水平检测基因表达。Northem blot 先通过电泳分离 RNA样品,然后将凝胶上的RNA转移到膜上并固定,最后使用与待测RNA互补的单链DNA探针与膜上RNA杂交。与膜上 RNA条带结合的探针信号强度与该基因的转录产物RNA水平呈正相关。在制备标记的DNA探针时,为避免复性,采用的方法是
A.急速冷却
B.迅速升温
C.缓慢降温
D.加入整合剂
E.升高 pH
[单选题]若要釆用Southern或Northern印迹方法分析某特定基因及其表达产物，需要
A.收集培养细胞的上清液
B. 收集组织或细胞样品，然后从中提取蛋白质
C. 利用PCR技术直接从标本中扩增出待分析的片段
D. 收集组织或细胞样品，然后从中提取总DNA或RNA
E.制备固定在支持物上的组织或细胞
[简答题]In the course of my training in this summer camp, I’ve learned the meaning of brotherhood.
[单选题]( ) -–Well, Randy is not quite ready to make a decision.
---So, ________, we have to wait, right?
A.on the other hand
B.in other words
C.for example
D.in some ways
[单选题] In the summer vocation, I usually go to my relative’s home in the country to rest after many months in school in the city. The summer days I recently spent _1_ me with happy memories. Let me tell you our daily program _2_ the short stay and the country life we enjoyed there. We usually get up at six and took a walk _3_ the beautiful grassland of wild flowers. The air was so clean and fresh. The pretty birds had just risen from their sleep and were jumping from branch to branch, singing their merry songs. Soon the rays of the sun could be seen on the river. We _4_ under the shade of trees for an hour and then went home. During the afternoon, we went to swim in a small river till the glorious sun was _5_ in the west. Sometimes, after it rained, the sky _6_ to be more beautiful. After supper, people began to enjoy the refreshing soft wind outside. Then _7_ came the bright moon. Occasionally one or two meteors (流星) would suddenly run across the sky as if they were playing with the fireflies. _8_, the world was warpped in sleep. The sweet notes of flute were heard _9_ the woods. Oh, how touching the _10_ was! It made us forget all the worries of life. [共10题]
A. gave
B.brought
C. filled
D. offered
[判断题]Ten minutes are too short a time to finish this.从主谓一致看，这句话是正确的。
A.正确
B.错误
[单选题]It is quite (_____) for people to stay up late when they have too much work to do.
A.gather
B. consist
C. common
D. observe
[判断题]驻波比测试仪校准接上短路标准器按SHORT。
A.正确
B.错误
[单选题] ( ) --What about __________ next summer vacation ?—Good idea.
A. go camping
B. going hiking
C. go fishing
D. going boat
[单选题]( )Where_____ Jim ________ last summer vacation ?
A. was, go
B. does, go
C. did, go
D. will , go
[单选题]( ) Take your time. It’s just ______ short distance from here to _______ restaurant.
A.
A, a
B.a, the
C. the, a
D. the, the
[单选题]在C语言中，int,char和short三种类型数据在内存中所占用的字节数 （）。
A.由用户自己定义
B.均为2个字节
C.是任意的
D.由所用机器的机器字长决定
