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【判断题】
出游人次是指在某一特定时期内,某一客源国或客源地的居民参加外出旅游活动的人数。 ( )A.
正确
B.
错误
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【单选题】What she said surprised me. 2. Where she went is none of your business. 3. Why they left the country is a secret. 4. How much it costs is a big problem. 5. Whether she comes or not are unimportant to ...
A.
1
B.
2
C.
3
D.
4
E.
5
【单选题】声控灯电路原理图如图所示。动态时,当MIC捡取声波信号后,就有音频信号注入VT1的基极,其信号的负半周使VT1退出饱和状态,VT1的集电极电压上升,VT2工作在 状态,LED1和LED2点亮发光。
A.
饱和
B.
截止
C.
开关
D.
放大
【单选题】____ surprised me most was____ such a little girl of seven could play the violin so well.
A.
That; what
B.
What; that
C.
That; that
D.
What; what
【简答题】________ surprised me most was ______ such a little girl of seven could play the violin so well.A. That;whatB. What;thatC. That; thatD. What; what
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