皮皮学，免费搜题
登录
搜题
【单选题】
以下哪项不是气相色谱法和质谱法这两种分析技术联用的有利条件(    )。
A.
气相色谱分离和质谱分析过程均在气态下进行
B.
气相色谱分析的化合物熔点范围适于质谱分析
C.
两种分析法的检测灵敏度相当，气相色谱分离的组分足够检测
D.
两种分析法对样品的制备和预处理要求有相同之处
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】At present the prices of this jeep run ______ $300,000.
A.
as high as
B.
so high as
C.
as high to
D.
so high to
查看完整题目与答案
【单选题】The word' clients' in this passage means______.
A.
people who can pay high fees to their lawyers
B.
People who are very poor and can't afford to pay their lawyers
C.
people who have been cheated by stores or threatened with eviction
D.
people who needs and uses legal help from lawyers
查看完整题目与答案
【多选题】整步表是用来检测待接入的发电机与已经运行的发电机或电网的（）与（）是否相同。为了检测发电机并网条件是否符合要求，通常需要接入两只（）、两只（）和一只（）。
A.
频率
B.
数字式相位表
C.
相位
D.
电压表
E.
频率表
F.
整步表
G.
无功功率表
H.
电流表
查看完整题目与答案
【判断题】判断：在做“摆扣步”的过程中膝盖应随着呼吸上下起伏
A.
正确
B.
错误
查看完整题目与答案
【单选题】In the second paragraph, the word 'real' in real goods could be replaced by______.
A.
high guality
B.
concrete
C.
utter
D.
authentic
查看完整题目与答案
【单选题】在枝条的节上有三片或三片以上的叶子呈轮状着生时,称为 __。
A.
对生
B.
轮生
C.
簇生
D.
互生
查看完整题目与答案
【多选题】Which of the following sentences are appropriate with the word “high-profile”?
A.
Another high-profile decision that must be made this spring is who will be basketball coach after this season?
B.
He became the most high-profile newscaster in Britain when he made his debut as the programme's anchorman.
C.
Now the belief is growing that the visit is being planned to coincide with the high-profile opening of the camp.
D.
He also advised them again to get a high-profile chairman and a well-known editor.
查看完整题目与答案
【简答题】整步表是用来检测待接入的发电机与已经运行的（）是否相同。为了检测发电机并网条件是否符合要求，通常需要接入两只电压表、两只频率表和一只整步表。
查看完整题目与答案
【单选题】The word 'clients' in this passage means ______.
A.
people who can pay high fees to their lawyers
B.
people who are very poor and can't afford to pay their lawyers
C.
people who have been cheated by stores or threatened with eviction
D.
people who needs and uses legal help from lawyers
查看完整题目与答案
【简答题】整步表是用来检测待接入的发电机与已经运行的发电机或电网的（）。为了检测发电机并网条件是否符合要求，通常需要接入两只（）、两只（）和一只（）。
查看完整题目与答案
相关题目：
【单选题】At present the prices of this jeep run ______ $300,000.
A.
as high as
B.
so high as
C.
as high to
D.
so high to
查看完整题目与答案
【单选题】The word' clients' in this passage means______.
A.
people who can pay high fees to their lawyers
B.
People who are very poor and can't afford to pay their lawyers
C.
people who have been cheated by stores or threatened with eviction
D.
people who needs and uses legal help from lawyers
查看完整题目与答案
【多选题】整步表是用来检测待接入的发电机与已经运行的发电机或电网的（）与（）是否相同。为了检测发电机并网条件是否符合要求，通常需要接入两只（）、两只（）和一只（）。
A.
频率
B.
数字式相位表
C.
相位
D.
电压表
E.
频率表
F.
整步表
G.
无功功率表
H.
电流表
查看完整题目与答案
【判断题】判断：在做“摆扣步”的过程中膝盖应随着呼吸上下起伏
A.
正确
B.
错误
查看完整题目与答案
【单选题】In the second paragraph, the word 'real' in real goods could be replaced by______.
A.
high guality
B.
concrete
C.
utter
D.
authentic
查看完整题目与答案
【单选题】在枝条的节上有三片或三片以上的叶子呈轮状着生时,称为 __。
A.
对生
B.
轮生
C.
簇生
D.
互生
查看完整题目与答案
【多选题】Which of the following sentences are appropriate with the word “high-profile”?
A.
Another high-profile decision that must be made this spring is who will be basketball coach after this season?
B.
He became the most high-profile newscaster in Britain when he made his debut as the programme's anchorman.
C.
Now the belief is growing that the visit is being planned to coincide with the high-profile opening of the camp.
D.
He also advised them again to get a high-profile chairman and a well-known editor.
查看完整题目与答案
【简答题】整步表是用来检测待接入的发电机与已经运行的（）是否相同。为了检测发电机并网条件是否符合要求，通常需要接入两只电压表、两只频率表和一只整步表。
查看完整题目与答案
【单选题】The word 'clients' in this passage means ______.
A.
people who can pay high fees to their lawyers
B.
people who are very poor and can't afford to pay their lawyers
C.
people who have been cheated by stores or threatened with eviction
D.
people who needs and uses legal help from lawyers
查看完整题目与答案
【简答题】整步表是用来检测待接入的发电机与已经运行的发电机或电网的（）。为了检测发电机并网条件是否符合要求，通常需要接入两只（）、两只（）和一只（）。
查看完整题目与答案