皮皮学,免费搜题
登录
搜题
【单选题】
有一混合蛋白质溶液,所含蛋白质的等电点分别为 4.6 、 5.3 、 5.8 、 6.7 、 7.3 。电泳时,欲使其中的 4 种蛋白质泳向正极,缓冲液的 pH 值:
A.
3.0
B.
4.0
C.
5.0
D.
6.0
E.
7.0
拍照语音搜题,微信中搜索
"皮皮学"
使用
参考答案:
参考解析:
知识点:
皮皮学刷刷变学霸
举一反三
【单选题】严禁任何单位和个人随身携带乘坐公共交通运输工具的药品
A.
麻醉药品
B.
精神药品
C.
医疗性毒性药品
D.
放射性药品
E.
戒毒药品
查看完整题目与答案
【单选题】- ? -They're on the desk. [ ]
A.
Where are my books
B.
Where is my books
C.
Where's my books
D.
Where my books ar e
查看完整题目与答案
【单选题】—Could you tell me _____? —Sorry, I don’t know.
A.
where are my socks
B.
where can I find my socks
C.
where my socks are
D.
where my socks put
查看完整题目与答案
【简答题】On the table, where my newspaper had been, was my ______.
查看完整题目与答案
【单选题】They made a crude attempt to kill the King.
A.
cruel
B.
successful
C.
unskillful
查看完整题目与答案
【单选题】若有 #define ADD ( x , y ) x*y ,则语句 printf ( ”s=%d” , ADD ( 2,2+3 ))的输出结果是().
A.
s=8
B.
s=7
C.
s=10
D.
s=11
查看完整题目与答案
【单选题】若有: #define ADD(x,y) x+y 则语句printf("s=%d", 5*ADD(4,3));的输出结果是______。
A.
s=35
B.
s=12
C.
s=23
D.
s=17
查看完整题目与答案
【简答题】Thousands of products ______ from crude oil are now in daily use. A) to make B) be made C) D) made
查看完整题目与答案
【简答题】Often associated with crude oil, natural gas is principally made up of___________ and other hydrocarbon gases.
查看完整题目与答案
【单选题】Do you know where my address book is? — It________ be in the hall cupboard. I think I saw it this morning.
A.
could
B.
can
C.
will
D.
must
查看完整题目与答案
相关题目:
【单选题】严禁任何单位和个人随身携带乘坐公共交通运输工具的药品
A.
麻醉药品
B.
精神药品
C.
医疗性毒性药品
D.
放射性药品
E.
戒毒药品
查看完整题目与答案
【单选题】- ? -They're on the desk. [ ]
A.
Where are my books
B.
Where is my books
C.
Where's my books
D.
Where my books ar e
查看完整题目与答案
【单选题】—Could you tell me _____? —Sorry, I don’t know.
A.
where are my socks
B.
where can I find my socks
C.
where my socks are
D.
where my socks put
查看完整题目与答案
【简答题】On the table, where my newspaper had been, was my ______.
查看完整题目与答案
【单选题】They made a crude attempt to kill the King.
A.
cruel
B.
successful
C.
unskillful
查看完整题目与答案
【单选题】若有 #define ADD ( x , y ) x*y ,则语句 printf ( ”s=%d” , ADD ( 2,2+3 ))的输出结果是().
A.
s=8
B.
s=7
C.
s=10
D.
s=11
查看完整题目与答案
【单选题】若有: #define ADD(x,y) x+y 则语句printf("s=%d", 5*ADD(4,3));的输出结果是______。
A.
s=35
B.
s=12
C.
s=23
D.
s=17
查看完整题目与答案
【简答题】Thousands of products ______ from crude oil are now in daily use. A) to make B) be made C) D) made
查看完整题目与答案
【简答题】Often associated with crude oil, natural gas is principally made up of___________ and other hydrocarbon gases.
查看完整题目与答案
【单选题】Do you know where my address book is? — It________ be in the hall cupboard. I think I saw it this morning.
A.
could
B.
can
C.
will
D.
must
查看完整题目与答案