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下列程序用于在带垂直滚动条的文本框Text1中输出3到100之间的全部素数。请填空。Private Sub Command1_click() Text1.Text="" For n=3 to 100 k=Int(Sqr(n)) i=2 Flag=0 Do While i＜= ______And Flag=0 If n Mod i=0 Then Flag=1 Else i=i+1 End If Loop Lf ______Trhen Text1.Text=Text1.Text & Str(n) & Chr(13) & Chr(10) End If Next nEnd Sub
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23～24 题基于以下说明。设有三个关系 学生关系S(SNO,SNAME,AGE,SEX) (分别代表学生的学号、姓名、年龄、性别) 学习关系SC(SNO,CNO,GRADE) (分别代表学生的学号、课程编号、成绩) 课程关系C(CNO,CNAME,TEACHER) (分别代表课程的编号、课程名、任课教师) 检索“至少选修课程号为′C1′的学生姓名(SNAME) ”的SQL语句是
在窗体上画一个文本框和一个图片框，然后编写下列两个事件过程：Private Sub Form_C1ick() Textl.Text="VB Programming"End SubPrivate SubText1_change() Picture1.Print"VB程序设计"End SUb程序运行后，单击窗体，则在文本框中显示的内容是______，而在图片框中显示的内容是______。
认知活动中最重要的能力是______。
Panasonic NV-F55MC operating InstructionsⅠ. Installation (Ⅰ) Connection to a TV set 1. Connect the external aerial (天线) to the RF Input Socket (插座) on the VTR (Videotape Recorder). 2. Connect the aerial terminal on your TV set to the RF Output Socket on the VTR with the supplied DIN-DIN Coaxial Cable. In places with higher temperature and high humidity (湿度), people with sensitive skin may feel some electricity. In this case, use the Separate Transformer Adaptor. 3. Connect the AC Mains Lead to the AC Mains Socket of the VTR to the mains outlet. 4. If the TV set is equipped with separate video and audio input sockets, it is recommended to connect the VTR to the TV set with separate video and audio cables. (Ⅱ) Connection to a Stereo Amplifier 1. Connect the Audio Input Sockets on the VTR to the REC OUT Sockets on the Stereo Amplifier. 2. Connect the Audio Output Sockets on the VTR to the PLAYBACK Sockets on the Stereo Amplifier.Ⅱ. Tuning the TV Set to the Video Playback Channel (Ⅰ) Video Playback Channel Adjustor 1. Turn the TV set on and select the AV program position or another program position that is not occupied by another TV station. 2. Press the VTR ON/OFF Switch to turn the VTR on. The corresponding indicator lights up. 3. Set the Karaoke Switch to "1" or "2". 4. Tune the selected program position of the TV set to UHF approx, channel C25 ( PAL D) or E38 (PAL I/SECAM D. K. ). Confirm on your TV set that the blue screen appears. ( C25: China channel 25; E38: Europe standard channel 38) If UHF channel E38 (C25) is already occupied by a TV station in your area, the video playback channel can be changed between channel 32 to 40 (24 to 27) on the back of the VTR by using a small screwdriver. 5. Set the Karaoke Switch to "NORMAL". Your TV is now ready to receive the RF output signal from the VTR. 6. To check, playback a pre-recorded tape and confirm that the picture quality is satisfactory. (Ⅱ) RF Selector Use the RF Selector to select the color TV system used by the TV set to be connected. (Ⅲ) PAL/MESECAM SelectorThis selector should be set according to the color TV system used during recording and play back. When the MESECAM Indicator is lit, the MESECAM is selected.Ⅲ. The Video Cassette (Ⅰ) Inserting a Video Cassette 1. Insert the video cassette as shown. The VTR will be turned on automatically and the cassette will be automatically drawn into the VTR. 2. When a video cassette is inserted, the "" mark will appear. When a video cassette with broken erasure (擦除) prevention tab (for example a pre recorded tape) is inserted, playback will start immediately. Use the VHS video cassette tapes only. We recommend the "Panasonic Hi-Fi" high grade video cassette tapes for improved picture and sound quality. (Ⅱ) Removing a Video Cassette Press the Eject (弹出) Button. Simply press the Eject button, the VTR turns itself on, ejects the cassette and turns itself off again.Ⅳ. Karaoke Playback (Ⅰ) Preparation 1. Make sure that the Timer Record Function is set to "OFF". 2. Insert a Karaoke video cassette. 3. Turn the TV set on and select the video playback channel. 4. Set the Noise Filter/Edit Selector to "OFF". 5. Connect a microphone to the Microphone Socket on the VTR. 6. Set Karaoke Switch to "1" or "2". 7. Select a desired tune. (Ⅱ) Singing along with a video cassette 1. Press the Play Button to begin the playback. 2. Adjust the sound volume of the Microphone to the proper volume with the Microphone Mixing Level Control while singing. If the volume is too high, the sound from the speaker may become distorted (扭曲). If acoustic (声音的) feedback occurs, turn the microphone volume down, use the microphone farther away from the speakers, hold the microphone so that it is not pointed toward the speakers, or turn the volume of the TV set down. 3. Adjust the echo effect to your taste with the Echo Control while singing. It is possible to apply the echo effect to the sound from both Microphone 1 and 2 at the same time. 4. Press the Stop Button to stop the playback.Ⅴ. Making Karaoke Tapes (Ⅰ) Preparation 1. Make the necessary connections as shown in the connection diagram. 2. Press the Input Signal Selector on the Remote Controller to select the "Al" program position (or select with the Channel Up or Down Button on the VTR). 3. Set the VTR System Selector to "PAL/MESECAM", "4.43" or "3.58" according to the color TV system of the video source. 4. Connect the VTR to a TV set equipped with separate video and audio input sockets and using the same color TV system as the video source. (Ⅱ) Cautions for Making Karaoke Tapes When making Karaoke tapes, be sure to adhere to the following points. 1. Select the SP mode on the VTR for recording. 2. Make sure that the length of the intervals between tunes ( soundless parts) is more than 6 seconds. Make sure that the noise level of these parts is kept to an absolute minimum. 3. Record only tunes with a length of more than 40 seconds. 4. When making Karaoke tapes, use the Pause/Still Button for editing. This minimizes noise at the points where successive recordings are joined.Ⅵ. Recording from a TV Broadcast Signal (Ⅰ) Preparation 1. Make sure that the Timer Record Function is set to "OFF". 2. Insert a video cassette with tile erasure prevention tab intact. 3. Set the Tape Speed Selector to "SP" or "LP". 4. Adjust the audio recording level as shown. (Ⅱ) Tape Speed Selector (SP/LP) For recording, either of two tape speeds can be selected. During playback, the VTR will automatically select the correct speed. SP Mode: For better picture quality. LP Mode: For longer recording time. The picture quality in the LP mode is not as good as that in the SP mode. (Ⅲ) Recording 1. Select on the VTR, the program position (channel) to be recorded. In order to confirm proper reception, turn on the TV set and select the video playback channel 2. Press the Record Button. 3. To finish the recording, press the Stop Button. Note: If the Karaoke Switch is not set to "NORMAL", recording is not possible. Confirm that the VTR System Selector is set to "PAL/MESECAM". While making recordings of the TV broadcast signal, if we choose the SP mode, we will have better picture quality.
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