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【单选题】
关于GC法中柱温的选择,下列说法错误的是A.
柱温不能高于固定液最高使用温度
B.
宽沸程样品的分离宜采用程序升温
C.
柱温降低可使选择性增大
D.
柱温升高会使分析时间缩短
E.
柱温较高时柱效高,尽可能采用较高柱温
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反馈参考答案：
举一反三
【单选题】While interviewing an adult client about the client's stress levels and coping responses, an appropriate question by the nurse is ( )
A.
"Do you feel stress at work?"
B.
"How often do you feel stressed?"
C.
"Is stress a problem in your life?"
D.
"How do you manage your stress?"
【单选题】根据《出境入境管理法》规定,外国人()准许入境。
A.
未持有效出境入境证件的
B.
人境后从事与签证种类相符的活动的
C.
有《出境入境管理法》规定的不予签发签证情形的
D.
逃避接受边防检查的
【单选题】She _____ and told him to stop using his phone while interviewing her.
A.
corrupted
B.
collapsed
C.
interrupted
D.
interrelated
【判断题】In order to listen attentively while interviewing, it is rather important to present the questions .
A.
正确
B.
错误
【单选题】While interviewing an adult client about the client's stress levels and coping responses, an appropriate question by the nurse is ( )
A.
"Do you feel stress at work?"
B.
"How often do you feel stressed?"
C.
"Is stress a problem in your life?"
D.
"Where is your stress from?"
E.
"How do you manage your stress?"
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