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【多选题】
Directions: Read the sentence below. It gives the main idea of the passage. Choose the THREE answer choices that give (important) ideas from the passage. Some answer choices are not correct because they are minor ideas in the passage or because the ideas are not in the passage.A.
Remote sensing photography at altitudes above 500 feet is not very useful.
B.
Infrared photography and digital imaging have enhanced the value of remote sensing photography.
C.
The use of remote controlled airplanes is more popular than the use of conventional airplanes.
D.
Aerial photography is the oldest and most common form of remote sensing.
E.
Synthetic Aperture Radar is a useful remote sensing technique.
F.
Synthetic Aperture Radar can be used without flying above the site.
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举一反三
【简答题】红日、地震、门户、理发的词语结构分别是（）、（）、（）、（）。
【简答题】排球比赛中，下列击球动作应判作犯规。 (A)捞球 (B)脚击球 (C)双手捧球 (D)膝以下部位击球
【单选题】Which is the third step taken by the doctor during the diagnosis?
A.
See the patient's tongue.
B.
Feel the patient's pulse.
C.
Ask the patient to open the mouth.
D.
Ask the patient to undress and lie down.
【多选题】解释电力线路三段式过流保护的工作原理（）。
A.
电力线路的三段式电流保护是指：过负荷、过电流保护电流和带时限电流速断保护
B.
电力线路的三段式电流保护是指：电流速断保护，带时限电流速断保护和过电流保护
C.
电流速断保护是按本线路的末端短路时的最大短路电流整定，保护范围为本线路全长的一部分，动作时间为继电器固有时间决定
D.
带时限电流速断保护是按上一线路的速断保护整定，保护范围为本线路全长，动作时间按下一线路的速断保护整定。其时限t=0.5s
E.
过电流保护是按线路最大负荷电流整定，保护范围根据近后备及远后备设置不同，近后备只对本线路起后备保护作用；远后备不仅对本线路起保护作用并延伸至下一线路或更远，动作时间按阶梯原则整定，靠近电源侧时间短，靠近负荷侧时间长
【简答题】A man with a green bag walked into a doctor’s room. “Please sit down. Open your mouth and your tongue(舌头),”the doctor said, “OK. You can your mouth now. It’s clear something is with you. You have to d...
【简答题】临床上瘙痒剧烈，急性期以丘疱疹为主，有渗出倾向，慢性期以苔藓样变为主，常反复发作
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