To estimate the follow statement (1*20=20 points)
1.Wrap fabrics are not included in speciality fabrics.F
2.Four primary structures are plain,rib,interlock and purl.T
3.The four primary ba weft knitted structures include: Plain structure, Rib structure, Interlock structure, Purl structure.T
4.Double-faced structures are thick but have bad dimensional stability. F
怎么拉筋5.Single-jery fabrics are mostly knitted on latch needle sinker top machines.T
平方米和平方厘米的进率是多少6.During the 1870s，the patents granted to Henry Griswold virtually perfected the hand-powered sock machine。T
7.In a warp knitted structure，all ends supplied from the same warp sheet normally have identical lapping movemonts becau each is lapped by a guide attached to the same guide bar。 F
8.The rest position, clearing, yarn feeding, knocking-over are the four parts of the knitting action of the V-bed hand flat machine.（keys：寒碜是什么意思true）
9.The movement of the jack is loop formation, holding-down and knocking-over. F
10.解决方案英语Knitted structures are progressively built-up from row after row of intermeshed loops.（keys：true）
11.The fabric take-away mechanism include tension boy, wind-up and accommodation devices. F
12.The latch needle was the first type of needle to be produced. It is the cheapest and simplest type to manufacture.F
13.A open lap is produced when a subquent underlap shogs in the opposite direction to the preceding overlap, thus lapping the same yarn around the \An open lap is produced when a subquent underlap shogs in the opposite direction to the proceding overlap . F
14.An open lap is produced either when a subquent underlap is in the same direction as the preceding overlap or an underlap is omitted so that the overlap of the next knitting cycle commences in the needle space where the previous overlap finished.T
15.A clod lap is produced when a subquent underlap shogs in the opposite direction to the preceding overlap, thus lapping the same yarn around the back as well as around the front of the needle. T
16.The single-cylinder sock machines are ud widely than the double-cylinder machines. T
17.Cams are condary weft knitting element which may be ud to provide versatility of latch needle lection and movement. T
18.The loop is basic structure of knitted fabrics. T
19.The tuck stitch show good in longitudinal and horizontal extensibility. T
早安正能量问候语20.Hand-manipulate V-bed rid flat machine can make 2 Knitting system(s) at most in a cycle. T 后鼻音
21.The brushes of the Hand-manipulate V-bed rid flat machine are to ensure needle latches fully opened . 高达壁纸T
22.Linear modules of stitch of knitted fabric is l/f. (l-loop length, f-Yarn diameter) T
23.Micromation is the advantage of electric control and programming in knitting. T
24.The kinking triangle angle is smaller, the smaller bending yarn tension F
25.The pattern wheel lecting mechanism can be carried out in round three needle lection 无线鼠标怎么连接F
26.Chain structure is realized through moving bed F
27.Interlock structure is formed by two rib is compod of fabric weft change .T
28.Stitches produced by varying the quence of the needle loop. T
29.The eccentric is a form of crank which provides a simple harmonic movement with smooth acceleration and deceleration.T
30.In wrap knitting machines, four types of cam drive have been employed: single acting cams, cam and counter cam, box cams and contour cams.T
31.Rib requires two ts of needles operating in between each other.T
32.Single-jery machines can only produce one type of ba structure. (单面机) T
33.Typical structures knitted on flat machines have cardigan stitches, half-cardigan or royal rib, and full-cardigan or polka rib. T
34.The way of yarn feed is consist of direct and indirect yarn T
35.Except for the few Griswold type hand-turned machines, all hosiery machines are of the revolving cylinder type。T
36.Two-cour fishnet is the most popular structure，having a repeat of two wales and fo
ur cours deep. T
37.The latch needle has the major advantage of being lf-acting or loop-controlled, so that individual movement and control of the needle enables stitch lection to be achieved. T
38.The principle of different butt positions is employed in the interlock cam system, where two cam tracks are ud. T
39.In post-knitting handling operations，the fabric must be maintained in as relaxed and tension-free a state as possible. T
