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【多选题】
自然灾害发生后,为了保证受伤旅游者的合法权益,导游员应该( )。
A.
突出以人为本的救灾理念
B.
采取恰当的应对措施以尽量减少损失
C.
带领旅游者积极寻找失踪人员
D.
尽快把伤员送往就近的医疗机构救治
E.
灾后,接受调查,处理善后事宜
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举一反三
【单选题】若幂函数f(x)的图象过点 (3, 1 3 ) ,则f(x)的解析式(  )
A.
f(x)=x -1
B.
f(x)=3x -2
C.
f(x)= x 9
D.
f(x)= x 2 27
【单选题】瓶内长管中的水柱正常的波动范围是
A.
1~4cm
B.
4~6cm
C.
6~8cm
D.
8~10cm
E.
微弱波动
【单选题】若函数f(x)为奇函数,且当x>0时,f(x)=2x-3,则当x<0时,f(x)=(  )
A.
f(x)=-2x+3
B.
f(x)=-3x+2
C.
f(x)=2x+3
D.
f(x)=3x+2
【简答题】完形填空。 We are now living in the 21st century. Is your classroom living in the 21st centuiy, too? Tony is a student in Grade 8 at an American middle school. He was surprised when he saw his modern 1 on ...
【简答题】阅读理解。 Life in the 21st century will be different from life in the 20th century, because many changes will take place in the new century. But what will the changes be? The population is growing fast. T...
【简答题】请听写出下列正确化学用语符号。
【单选题】若函数f(x)满足f(3x+2)=9x+8,则f(x)的解析式是 [     ]
A.
f(x)=9x+8
B.
f(x)=3x+2
C.
f(x)=-3x-4
D.
f(x)=3x+2或f(x)=-3x-4
【单选题】若∫f(x)dx=x 3 e 2x +C,则f(x)=(    ).
A.
6x 2 e x
B.
3x 2 e 2x
C.
2x 3 e x
D.
x 2 e 2x (3+2x)
【简答题】阅读理解。 Life in the 21st century will be different from life in the 20th century, because many changes will take place in the new century. But what will the changes be? The population is growing fast. T...
【多选题】梁的横截面上正应力的分布规律包括:
A.
上、下边缘的点应力最大
B.
中性轴上为零
C.
正应力的大小与到中性轴的距离成正比
D.
正应力的分布规律与各点的变形规律不一样
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