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【单选题】
关于浸渍法下列叙述错误的是A.
提取温度不同可分为常温浸渍法和温浸法
B.
一般选用动态提取
C.
适用于有效成分能溶于水,且对湿、热较稳定的药材
D.
操作时间长,溶剂用量较大
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【单选题】What sampling method(s) will you probably use if you are going to design a study to tackle the following issue? “The most popular required and elective courses among your classmates and the reasons th...
A.
purposive sampling
B.
Census
C.
Systematic sampling
D.
Simple random sampling
E.
Stratified sampling
【单选题】听力原文：M: I have registered two elective courses for next semester. How about you? W: Well, I haven't decided yet, because I'll have more required courses next term. Q: What do we know from the conversa...
A.
The man will have two required courses next semester.
B.
The woman has not made a decision yet.
C.
The man will have to make a decision.
D.
The woman will have two elective courses next tern.
【简答题】Counselors try to _____________ the parents when they help students choose elective courses.
【简答题】We have to take some elective courses and ________________(必修课) to gain enough credits.
【简答题】American high school life is different from Chinese. In America, after middle school comes high school. It ___1____ grades 9 through 12. During the four years, most American high school students ____2...
【简答题】With the reform of Chinese higher education, more and more colleges and universities put emphasis on nurturing students' abilities. 41 a consequence, elective courses are available not only for excell...
【简答题】data emphasize yze involve modify monitor grant ignored ignore device controversy purchase 8. Counselors try to _____________ the parents when they help students choose elective courses.
【单选题】【2018-49 一级】关于施工企业返修义务的说法,正确的( )。
A.
施工企业仅对施工中出现质量问题的建设工程负责返修
B.
非施工企业原因造成的质量问题，相应的损失和返修费用由责任方承担
C.
施工企业仅对竣工验收不合格的工程负责返修
D.
对于非施工企业原因造成的质量问题，施工企业不承担返修的义务
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