皮皮学,免费搜题
登录
搜题
【多选题】
根据Van Deemter方程式:H=A+B/u+Cu,下列说法错误的是()。
A.
H 越大,则柱效越高,色谱峰越窄,对分离有利
B.
固定相颗粒填充越均匀,柱效越高
C.
载气线速越高,柱效越高
D.
溶质在载气中的扩散系数越大,柱效越高
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
【简答题】Natural light with intensity I and linear polarized light with intensity 3I both fall on a polarizer, the total transmitted intensity is 2I. What is the angle θ between the axis of polarizer and polar...
【单选题】听力原文: Some children are natural-born bosses. They have a strong need to make decisions, manage their environment, and lead rather than follow. Stephen Jackson, a Year One student, 'operates under the ...
A.
They make good decisions.
B.
They lack care from others.
C.
They have little sense of fear.
D.
They show self-centeredness.
【简答题】Some children are natural-born bosses. They have a strong need to make decisions, manage their environment, and lead rather than follow. Stephen Jackson, a Year One student, “operates under the theory...
【简答题】C Some children are natural-born bosses. They have a strong need to make decisions, manage their environment, and lead rather than follow. Stephen Jackson, a Year One student, “operates under the theo...
【单选题】人生得意须尽欢,莫使金樽空对月。的作者是:
A.
苏轼
B.
李白
C.
陆游
D.
毛泽东
【单选题】听力原文: Some children are natural born bosses. They have a strong need to make decisions, manage their environment, and lead rather than follow. Stephen Jackson, a Year One student, 'operates under the ...
A.
They may probably become lonely.
B.
They may probably become skilful.
C.
They may probably become relaxed.
D.
They may probably become hesitant.
【简答题】Some children are natural-born bosses. They have a strong need to make decisions,manage their environment,and lead rather than follow. Stephen Jackson,a Year One student,“operates under the theory of ...
【单选题】要求设计输出转矩T=52.5N・m,转速n=30r/min的轴向柱塞式液垣马达,设马达的排量q 0 =105cm 3 /r,求所需要的流量和压力各为多少(马达的机械效率及容积效率各为0.9)?
A.
(1)流量:3.5L/min; (2)压力:3.49 x 10 6 Pa=3.49Mpa
B.
(1)流量:3.5L/min; (2)压力:3.49 x 10 6 Pa=3.49Mpa A .(1)流量:3.5L/min; (2)压力:3.49 x 10 8 Pa=3.49Mpa B .(1)流量:3.7L/min; (2)压力:3.49 x 10 6 Pa=3.49Mpa
【简答题】阅读理解。 Some children are natural-born bosses. They have a strong need to make decisions, manage their environment, and lead rather than follow. Stephen Jackson, a Year One student, 'operates under the ...
【简答题】阅读理解 It has been proved that some children are natural--born bosses. They have a strong need to make decisions, manage their environment, and rather than follow. Stephen Jackson, a Year One student, o...
相关题目: