- 讲师:刘萍萍 / 谢楠
- 课时:160h
- 价格 4580 元
特色双名师解密新课程高频考点,送国家电网教材讲义,助力一次通关
配套通关班送国网在线题库一套
△ABC中,ABC所对的边分别为a,b,c,已知a=3,cosA=√6/3,B=A+π/2,①求b的值②求△ABC的面积△ABC中,B=2A,a=1,b=√3,求c边△ABC的内角A,B,C的对边分别为a,b,c,已知b=2,B=π/6,c=π/4,求△ABC的面积
以下说法正确的是
A、HBV不同亚型之间没有交叉免疫,免疫后各亚型之间不能交叉保护
B、我国乙肝发病率在30~39岁有一高峰,因此,我国HBV感染者以成年为主
C、乙肝发病率有周期性起伏现象和明显的季节高峰
D、乙肝患者、HBsAg和HBeAg携带者均呈明显的家庭聚集性现象
E、乙肝主要通过粪-口途径传播
请帮忙给出正确答案和分析,谢谢!
The function of the sentence "A nice day, isnt it?" is______.
A.informative
B.phatic
C.directive
D.performative
请帮忙给出正确答案和分析,谢谢!
机体对HBV有免疫力的指标是
A.A
B.B
C.C
D.D
E.E
请帮忙给出正确答案和分析,谢谢!
Which of the following sentences is an emphatic sentence(强调句)?
A.What he means, in other words, his intentions is more annoying than his words.
B.His intentions instead of his words have annoyed me.
C.I was annoyed by his intentions rather than what he means.
D.It is what he means rather than what he says that annoys me.
请帮忙给出正确答案和分析,谢谢!
传染性强的指标(俗称大三阳)是
A.A
B.B
C.C
D.D
E.E
请帮忙给出正确答案和分析,谢谢!
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