【判断题】【消耗次数：1】
气相色谱法中液体手工取样器一般采用平头微量注射器。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【多选题】
气相色谱法鉴别，适宜的制剂样品为含有何种成分的制剂？
①
挥发油
②
挥发油成分
③
不挥发性成分可分解或制成挥发性衍生物
④
不挥发性成分不可分解
⑤
不挥发性成分不可分解或不能制成衍生物
【多选题】
顶空气相色谱法的特点有
①
样品处理方法简单
②
检测限低
③
可分析含量低的样品
④
适用于易挥发或易分解和无法直接进样分析的液体或固体样品的分析
⑤
可分析成分复杂的样品
随机题目
【单选题】
I intend to ______ a larger order if you give me a discount.
①
place
②
play
③
pose
④
pick
【单选题】
When you are______, sit at the front edge of the chair, leaning forward slightly.
①
seated
②
fixed
③
rested
④
decided
【单选题】
_____withthesizeofthewholeearth,thehighestmountaindoesnotseemhighatall.
①
When compared
②
Compare
③
While comparing
④
Comparing
【单选题】
____________the rainny weather, they would be all right.
①
Were it not for
②
It were not for
③
Not for it
④
For it were not
【单选题】
The woman was innocent and the judge insisted that she______at once.
①
be set free
②
be setting free;
③
was set free
④
set free
【单选题】
But considering the long-standing business relationship between us, we shall ______ you a special discount.
①
grade
②
grasp
③
grant
④
glance
【单选题】
______ the storm, we should have reached our company.
①
Because of
②
In spite of
③
In case of
④
But for
【单选题】
The rug is______ much better quality. It is made of 80% cotton and 20% wool.
①
from
②
of
③
in
④
at
【单选题】
How I wish every family______ a large house with a beautiful garden!
①
had had
②
will have
③
had
④
has