【填空题】[图] 工作原理：推动阀杆6，顶起钢珠4打开或关...

【填空题】Task: Audio-visual Exercises AV Clip 4:AV 4.mp4 Watch the second part of the video clip and fill in each blank with the number mentioned in the video. When food is ingested, it travels along the (1) _____________where it is broken down into its (2) ___________________in order to be absorbed into the bloodstream. One such nutrient is (3) _______________, a simple sugar. Glucose gets absorbed by the stomach and (4) ________________and then enters the bloodstream. It travels through the (5) _____________ to all body cells. Once absorbed into the bloodstream, glucose circulates, causing the blood sugar level to rise. An increased level of blood sugar sends a signal to the (6) _________________ which respond by secreting the hormone insulin into the circulation. Insulin is necessary for glucose to reach and be used by several important (7) _______________tissues throughout the body. These include the liver muscle and (8) _____________ . Insulin is necessary to keep blood glucose levels stable in the body. Glucose enters the cell through a process called facilitated diffusion.

【填空题】阅读十字接头零件图，回答下列问题1.根据零件名称的结构形状判断该零件属于_____类零件。 2.十字接头的结构由三部分组成，分别为_________、________和____________。 3.零件长、宽、高三个方向的主要基准为_________________________、 ________________、________ ____。 4.该零件用了___个主要图形来表达，采用________方法表达内部结构，用__________表达肋板的形状和厚度。 5.指出主视图中下列尺寸属于哪种类型的尺寸80是_____尺寸，38是_____尺寸40是_____尺寸，24是______尺寸，110 是______尺寸 6.最大极限尺寸是________，最小极限尺寸为______，公差为______查表改写成公差带代号后应为_______，表示基___制的_____孔 7.的含义表示被测要素为________________基准要素为________，公差项目为________，公差值为________。 8.零件上共有___个螺纹孔，它们的尺寸是___________________。 9.该零件中要求最高的表面为___________内圈面。其表面粗糙度为____。 10.在指定位置处画出剖视图。

【填空题】一、读虎钳装配图，回答下列问题。 1. 主视图中7号件为何不画剖面线？ 答： 。 2. 6号件的作用是 。 3. 按图中序号，写出拆卸虎钳的顺序（用零件序号表示） 。 4. 虎钳装配图中，外形尺寸是 ，性能（规格尺寸）是 。 5. 图中φ12H9/f9是 尺寸，φ12表示 ，此配合制度是 制。 6. 拆画件5螺母零件图（不标尺寸及技术要求）。比例2：1，尺寸从图中量取。图画在作业纸上并拍照上传。

【填空题】Lesson 4 课后作业-词汇填空 marking Rejected takeoff Runway incursion consequence sign expeditiously airstrip stopway 1. The________is an area beyond the runway which can be used for deceleration in the event of a rejected takeoff. 2. A_________is an incident where an unauthorized aircraft, vehicle or person is on a runway, which adversely affects runway safety, as it creates the risk that an airplane taking off or landing will collide with the object. 3. In order to avoid the conflicting traffic, Airbus 320 was instructed by the ATC to climb _______to and maintain 7000 meters. 4. There can be many reasons for deciding to perform a _________, but they are usually due to suspected or actual technical failures, like an engine failure such as a compressor stall occurring during the takeoff run. 5. An_________ is a small aerodrome that consists only of a runway with perhaps fueling equipment. 6. The light array is located at the intersection of two runways and a taxiway. This _________indicates where an aircraft is to hold before entering a runway. 7. Layouts with parallel runways and/or intersecting runways increase the probability of both ATC issuing conflicting clearances and, occurrence of incursions as a__________ of flight crew errors. 8. Airport guidance_________provide direction and information to taxiing aircraft and airport vehicles.

【填空题】阅读轴零件图，回答下列问题1．该零件的名称是_____，材料是_______，比例是______。 2．该零件共用了____个图形来表达，主视图中共有_____处作了______，并采用了________画法，另两个图形的名称是___________。 3．在轴的右端有一个_____孔，其大径是______，螺孔深度是_______，旋向是________。 4．在轴的左端有一个键槽，其长度是______，深度是_____，宽度是______，定向尺寸是__ ____，键槽两侧的表面粗糙度要求是______。 5．尺寸Φ25±0.065的基本尺寸是______，最大极限尺寸是_________，最小大极限尺寸是_________，公差是______。 6．图中未注倒角的尺寸是______，未注表面粗糙度符号的表面Ra值是______μm。 7．图中框格 表示被测量要素__________________，基准要素是______和______的公共轴线，位 置公差是_________，公称值是______。 8．在图上指明三个方向的尺寸基准。（3分） 9．图中的两个断面图，没标字母，请说明原因。（3分）

【填空题】阅读管板零件图，回答下列问题1.该零件的名称为______，材料为________，比例为______，属于___类零件。 2.该零件的主视图采用了___剖视;左视图采用了_____画法，以表示直径相同且成规律分布的孔，其中直径为25.5的管孔______个，直径为16的孔有______个;另外两个图分别是____ ______和_________ ________。 3.此零件上有__个螺纹孔，其尺寸为____ 含义为____________ ______________；其细部结构在_____图上表示，采用比例为______. 4.管孔的细部结构在___________图上表示，采用比例为_____. 5.管板上?25.5管孔的定位尺寸为___________,?16安装孔的定位尺寸为______. 6.管板多数表面粗糙度为_________。 7.该零件的外形尺寸为__________，其右端面有_______和_____结构。 8.试给该零件制定出合理的技术要求。

【填空题】AV Clip 16: Smoking and Mental DeclineAV 16 Smoking & Mental Decline.avi Watch the video clip three times and complete the following passage by filling in each blank with the word from the video clip. Cigarette smoking has long been associated with many serious health risks, including (1)______________ disease, stroke and cancer. Now new research shows that cigarette smoking may also be (2)________ to increase mental decline with age. Researchers from National Institute for Public Health and (3)____________ in the Netherland studied nearly 2,000 men and women aged 43 to 70 years. They gave (4)___________ cognitive tests, once at the beginning of the study, and then again five years later. The result shows that mental decline among smokers was 1.9 times greater for (5)__________ function, 2.4 times greater for mental (6)__________ and 1.7 times greater for overall cognitive ability. In the U.S., nearly 25% men and 18% women are still smokers. The researchers suggest that smokers who (7)________ their habit at any age may be able to postpone the (8)________ of cognitive decline as they grow older.

【填空题】阅读偏心轴零件图，回答下列问题1.该零件名称为_______，图号为_____________材料为______，属于___类零件。 2.绘图比例为______，属于比例____，表示_____是_____的两倍。 3.偏心轴的基本组成形体是___个________，其直径尺寸分别为________、________、_____,与主轴线的偏心距为______。 4.图中孔的定位尺寸是____和_____其表面粗糙度为______。 5.零件上共有___处倒角尺寸为____。 6.主视图中右部同一直径分别标注的原因是______________ __________。φ38表面粗糙度为_________，的表面粗糙度为________，该轴段处将与以某零件的孔有_____关系。 9.基本尺寸为_____，该尺寸最大可以加工到________最小可以加工_______到其公差值为______。 10.右下图上方没有任何标注，是因为它的位置是在___________________。 11.该零件图中表面粗糙度最高要求的是_______最低的是_______。

【填空题】Task 4 - Make Backups of Important Files and Folders Whether you （1） it or not, you’ve divided everything you own into（2） broad categories: those （3） you can replace and those you can’t. For the items you can’t （4）, you’ve probably （5） them in a safe place, either somewhere in your living （6）. As you computerize the （7） aspects of your daily life, making （8） copies of important files and foods become critical. Even if you can’t store the backup （9） in a （10） container or somewhere outside your home, make backups anywhere anyway. Any backup is better than none.

【填空题】看懂组合体的视图，进行尺寸分析，并填空。（1）长度方向的尺寸基准为（ ）。 （2）宽度方向的尺寸基准为（ ）。 （3）高度方向的尺寸基准为（ ）。 （4）组合体的总长为（ ）。 （5）组合体的总宽为（ ）。 （6）组合体的总高为（ ）。 （7）主视图中圆形孔的定形尺寸是（ ）。 （8）主视图中圆形孔的定位尺寸是（ ）。