Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[collide with; take hold of; for a moment; head for; ever since; be full of; share with; make fun of]4. As he fell, his head[填空1]the table.
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【简答题】
Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[collide with; take hold of; for a moment; head for; ever since; be full of; share with; make fun of]3. Dont[填空1]the disabled!
【简答题】
Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[collide with; take hold of; for a moment; head for; ever since; be full of; share with; make fun of]7. Anyone can upload their dictionary and[填空1]others.
【简答题】
Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[collide with; take hold of; for a moment; head for; ever since; be full of; share with; make fun of]5.[填空1]your end of the stick, and well pull you up.
【简答题】
Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[collide with; take hold of; for a moment; head for; ever since; be full of; share with; make fun of]6. We saw him[填空1]us, so we stepped aside.
【简答题】
Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[collide with; take hold of; for a moment; head for; ever since; be full of; share with; make fun of]1. Ann had lived in a cottage[填空1]she was born, and had no wish to move to a tower block.
【简答题】
Direction: Fill in the blanks with the words given below. Change the form if necessary.[dodge; mean; tease; disability; regular; bonus; proclaim; universal]4. His[填空1]prevents him from holding a job.
【简答题】
Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[have access to; go off; desperate for; put up with; always the case; give advice; concentrate on; arrive at; make an effort; come in handy]4. A few minutes later the bomb[填空1]destroying the vehicle.
【简答题】
Direction: Fill in the blanks with the words given below. Change the form if necessary.[chore; talent; crowded; earnings; finance; festive; memorable; sacrifice; smash; reproduction]3. He was satisfied with his[填空1]as an accountant.
【简答题】
Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[have access to; go off; desperate for; put up with; always the case; give advice; concentrate on; arrive at; make an effort; come in handy]9. But in reality this is not[填空1].
【简答题】
Direction: Fill in the blanks with the phrases given below. Change the form if necessary.[have access to; go off; desperate for; put up with; always the case; give advice; concentrate on; arrive at; make an effort; come in handy]10. I calculated that he would[填空1]the meeting.
① <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/A33618F57A0BFEDDEEAFC91D2E7059CC.png data-tex={ U }_{ l }=416.3V/>
② <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/13AE67CF84BAC20C550079E89CE305D9.png data-tex={ U }_{ l }=461.3V/>
③ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/E1341C93714922B632DEBCE4313CF8C6.png data-tex={ U }_{ l }=400V/>
④ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/3E1091706B8F7374BA8BE14B1FEDF956.png data-tex={ U }_{ l }=358.2V/>
① <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/80C14D152614D713405E83B0DE81FDF4.png data-tex={ Z }_{ L }=(0.6+j0.2)\Omega ,{ P }_{ max }=416.6W/>
② <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/8E33BDBE346DA6ACF7456637D0C52813.png data-tex={ Z }_{ L }=(0.6-j0.2)\Omega ,{ P }_{ max }=416.6W/>
③ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/B0E1DB55162B982797B8F32573286D69.png data-tex={ Z }_{ L }=(0.2+j0.6)\Omega ,{ P }_{ max }=416.6W/>
④ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/FE85C5E2EFA64184ADBB6C5059BD1EFE.png data-tex={ Z }_{ L }=(0.6+j0.2)\Omega ,{ P }_{ max }=46.6W/>
① <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/D5A6F8981882EB832EF1EF2D47534C8D.png data-tex=cos\varphi =0.5,R=15\Omega ,{ X }_{ L }=16.1\Omega />
② <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/5C4C3196D1110576D4461A65FB0E9490.png data-tex=cos\varphi =0.682,R=15\Omega ,{ X }_{ L }=16.1\Omega />
③ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/5723BC0EA51626B821293278E60D4474.png data-tex=cos\varphi =0.682,R=16.1\Omega ,{ X }_{ L }=15\Omega />
④ <img class=jc-formula style=vertical-align: middle; src=https://huaweicloudobs.ahjxjy.cn/24C4607E78F40A9829ADB1518F6E1FE4.png data-tex=cos\varphi =0.6,R=15\Omega ,{ X }_{ L }=16.1\Omega />
【单选题】
2-1 求题图2-1所示电路的输入电阻<img class=jc-formula data-tex={ R }_{ ab } src=https://huaweicloudobs.ahjxjy.cn/6C6E461520C684943C6A930FE5BDF18E.png style=vertical-align: middle;/>。<img src=https://huaweicloudobs.ahjxjy.cn/5B3EF66A642BC4FD8C9FBBC1FF7D1E09.png title=2-1.PNG alt=2-1.PNG/>
① <img class=jc-formula data-tex={ R }_{ ab }=3\Omega src=https://huaweicloudobs.ahjxjy.cn/7F8664EFB8C75064D1D4ABEB5392C174.png style=vertical-align: middle;/>
② <img class=jc-formula data-tex={ R }_{ ab }=4\Omega src=https://huaweicloudobs.ahjxjy.cn/B30A8F74BCB7C356DAEC7404DCC96E2F.png style=vertical-align: middle;/>
③ <img class=jc-formula data-tex={ R }_{ ab }=3.4\Omega src=https://huaweicloudobs.ahjxjy.cn/A318A3B99CF30192A7E63F595A58F653.png style=vertical-align: middle;/>
④ <img class=jc-formula data-tex={ R }_{ ab }=4.4\Omega src=https://huaweicloudobs.ahjxjy.cn/A7F0D3B2C8B0E001E5889D9054C3FA97.png style=vertical-align: middle;/>