皮皮学，免费搜题
登录
logo - 刷刷题
搜题
【简答题】
药物含量分析法中色谱分析法按分离原理可以分为 、 、 与分子组排色谱法。其中根据固定液和流动相的极性不同，液相色谱可分为两大类。固定相极性 流动相极性的称为 液相色谱，适用于分离极性化合物；固定液相性 流动相极性的称为 液相色谱，适用于分离非极性化合物。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案：
举一反三
【单选题】The naughty boy _____ to me that the hen_____ there just now had_____ two eggs the day before. [     ]
A.
laid, laid, laid
B.
1ied, lying, laid
C.
1ied, laid, lain
D.
1aid, lay, lain
查看完整题目与答案
【多选题】发现有人触电时,切断电源的方法有()
A.
拉下电闸
B.
用干木棍把触电者身上的电线挑开
C.
用手拉开触电者
D.
用手把电线拿走
查看完整题目与答案
【单选题】Eight times within the past million years, something in the Earth's climatic equation has changed, allowing snow in the mountains and the northern latitudes to accumulate from one season to the next i...
A.
Marine sediments have allowed scientists to amass evidence tending to confirm that astronomical cycles drive the Earth's glacial cycles.
B.
The ratio between two different isotopes of oxygen in seawater correlates closely with the size of the Earth's ice sheets.
C.
Surprisingly, single-cell marine organisms provide a record of the Earth's ice ages.
D.
The Earth's astronomical cycles have recently been revealed to have an unexpectedly large impact on the Earth's climate.
查看完整题目与答案
【多选题】在进行车辆配载时,应遵循的原则包括( ABCD )
A.
充分利用车辆的有效容积和载重量
B.
重不压轻，大不压小
C.
尽量做到 “先送后装”
D.
货物标签朝外
查看完整题目与答案
【单选题】The naughty boy _______ to me that the hen that ______ there just now had_____ two eggs the day
A.
26. The naughty boy _______ to me that the hen that ______ there just now had_____ two eggs the day before. A．laid; laid; laid
B.
laid; lay; lain
C.
lied; lay; laid
D.
lied; laid; lain
查看完整题目与答案
【单选题】物质的量浓度的符号为
A.
p
B.
c(B)
C.
p(B)
D.
w(B)
查看完整题目与答案
【多选题】发现有人触电时，切断电源的方法有（）
A.
拉下电闸
B.
用干木棍把触电者身上的电线挑开
C.
用手拉开触电者
D.
用手把电线拿走
E.
以上答案都不对
查看完整题目与答案
【单选题】What would be displayed as a result of the following code? int x = 578; System.out.print("There are " + x + 5 + "\n" + "hens in the hen house.");
A.
There are 583 hens in the hen house.
B.
There are 5785 hens in the hen house.
C.
There are x5\nhens in the hen house.
D.
There are 5785 hens in the hen house.
查看完整题目与答案
【多选题】发现有人触电时，切断电源的方法有（）
A.
拉下电闸
B.
用干木棒把触电者身上的电线挑开
C.
用手拉开触电者
D.
用手把电线拿走
E.
以上都对
查看完整题目与答案
【单选题】Eight times within the past million years, something in the Earth's climatic equation has changed, allowing snow in the mountains and the northern latitudes to accumulate from one season to the next i...
A.
unfolding a phenomenon.
B.
posing a contrast.
C.
refuting a speculation.
D.
testifying a hypothesis.
查看完整题目与答案
相关题目：
【单选题】The naughty boy _____ to me that the hen_____ there just now had_____ two eggs the day before. [     ]
A.
laid, laid, laid
B.
1ied, lying, laid
C.
1ied, laid, lain
D.
1aid, lay, lain
查看完整题目与答案
【多选题】发现有人触电时,切断电源的方法有()
A.
拉下电闸
B.
用干木棍把触电者身上的电线挑开
C.
用手拉开触电者
D.
用手把电线拿走
查看完整题目与答案
【单选题】Eight times within the past million years, something in the Earth's climatic equation has changed, allowing snow in the mountains and the northern latitudes to accumulate from one season to the next i...
A.
Marine sediments have allowed scientists to amass evidence tending to confirm that astronomical cycles drive the Earth's glacial cycles.
B.
The ratio between two different isotopes of oxygen in seawater correlates closely with the size of the Earth's ice sheets.
C.
Surprisingly, single-cell marine organisms provide a record of the Earth's ice ages.
D.
The Earth's astronomical cycles have recently been revealed to have an unexpectedly large impact on the Earth's climate.
查看完整题目与答案
【多选题】在进行车辆配载时,应遵循的原则包括( ABCD )
A.
充分利用车辆的有效容积和载重量
B.
重不压轻，大不压小
C.
尽量做到 “先送后装”
D.
货物标签朝外
查看完整题目与答案
【单选题】The naughty boy _______ to me that the hen that ______ there just now had_____ two eggs the day
A.
26. The naughty boy _______ to me that the hen that ______ there just now had_____ two eggs the day before. A．laid; laid; laid
B.
laid; lay; lain
C.
lied; lay; laid
D.
lied; laid; lain
查看完整题目与答案
【单选题】物质的量浓度的符号为
A.
p
B.
c(B)
C.
p(B)
D.
w(B)
查看完整题目与答案
【多选题】发现有人触电时，切断电源的方法有（）
A.
拉下电闸
B.
用干木棍把触电者身上的电线挑开
C.
用手拉开触电者
D.
用手把电线拿走
E.
以上答案都不对
查看完整题目与答案
【单选题】What would be displayed as a result of the following code? int x = 578; System.out.print("There are " + x + 5 + "\n" + "hens in the hen house.");
A.
There are 583 hens in the hen house.
B.
There are 5785 hens in the hen house.
C.
There are x5\nhens in the hen house.
D.
There are 5785 hens in the hen house.
查看完整题目与答案
【多选题】发现有人触电时，切断电源的方法有（）
A.
拉下电闸
B.
用干木棒把触电者身上的电线挑开
C.
用手拉开触电者
D.
用手把电线拿走
E.
以上都对
查看完整题目与答案
【单选题】Eight times within the past million years, something in the Earth's climatic equation has changed, allowing snow in the mountains and the northern latitudes to accumulate from one season to the next i...
A.
unfolding a phenomenon.
B.
posing a contrast.
C.
refuting a speculation.
D.
testifying a hypothesis.
查看完整题目与答案
参考解析：
知识点：
题目纠错 0
发布
创建自己的小题库 - 刷刷题