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【多选题】
下列关于强度方程的描述,正确的有()。A.
B.
C.
强度方程表明声强矢量的散度为零
D.
强度方程表明声强矢量的为零
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【简答题】科学成本管理的核心是( )
【单选题】Lloyd Memorial High School's experimentation with the idea of single-sex class ______.
A.
was carried out in all classes of all grades
B.
primarily, aimed to improve the boys' reading
C.
was regarded to be a success both by teachers and parents
D.
were confronted with objection from the students
【单选题】When is the Spring Festival?
A.
It's on the first day of a year on the lunar calendar.
B.
It's on the first day of December on the lunar calendar.
C.
It's on the Lunar New Year's Eve.
D.
It's on the first day of a year on the solar calendar.
【单选题】双胍类降血糖药物的作用机制是:( )
A.
刺激胰岛素β细胞释放胰岛素
B.
降低血清糖原水平
C.
增加胰岛素与靶组织的结合能力
D.
抑制α-葡萄糖苷酶
E.
促进脂肪组织摄取葡萄糖和抑制肠道葡萄糖的吸收
【单选题】Monday's class was ___________ because the weather was too bad.
A.
repeated
B.
treated
C.
canceled
D.
scanned
【简答题】Monday’s class was ____________ because
the weather was too bad.
【单选题】On January 1st, people usually make a New Year's ________ such as quitting smoking or losing weight, but it's never an easy job.
A.
resolve
B.
resolution
C.
decision
D.
determination
【简答题】根据短文内容和首字母提示完成下列单词。 J 1 1st is New Year's Day. Women's Day is on Match e 2 The first of M 3 is May Day China's Youth(青年)Day comes after it It's on May f 4 .Children's Day is on J 5 1st J 6 1st is our ...
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