Grile productii pag 100-103

Grile productii pag 100-103

University

16 Qs

quiz-placeholder

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Grile productii pag 100-103

Grile productii pag 100-103

Assessment

Quiz

Science

University

Hard

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16 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

39. Din productia mondiala de lana, dintre urmatoarele, continentul cu cel mai mare procent il reprezinta:

a) Africa

b) Oceania

c) Europa

d) Asia

e) America

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

40. Principalele tari producatoare de lana sunt:

a) Australia, India, Algeria

b) China, Noua Zeelanda, Mongolia

c) Maroc, Niger, Turcia

d) Ucraina, Republica Moldova, Rusia

e) Australia, China, Noua Zeelanda

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

41. La sortarea lanii, se ia in considerare:

a) Finetea

b) Culoarea

c) Uniformitatea

d) Randamentul la spalare

e) Raspunsurile a,b,c

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

42. Stratul cuticular al lanii:

a) Reprezinta invelisul fibrei de lana

b) Celulele sale sunt dispuse una langa alta, ca tiglele pe casa

c) Celulele sale apar la microscop ca tuburile telescopice de la masinile de semanat

d) Variantele a si b

e) Variantele a, b, c

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

43. Stratul medular(canalul medular) al fibrei de lana:

a) Apare sub forma unui canal in partea centrala

b) Are forma ovala, de disc sau de rinichi in sectiune longitudinala

c) Este discontinuu si cu diametru mic

d) La fibrele de par, canalul nu este intotdeauna prezent

e) Nu exista.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

44. Care este componenta care imbunatateste proprietatile mecano-fizice si tehnologice ale lanii, indeosebi rezistenta si elasticitatea?

a) Cheratina

b) Calciul

c) Azot

d) Hidrogen

e) Sulf

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

45. Referitor la lana, care dintre urmatoarele caracteristici este falsa?

a) Lana este rezistenta la solutii acide

b) Lana de camila, de lama si de capra Angora reprezinta 30% din intreaga productie piloasa cu proprietati textile care se obtine de la animale

c) Turcia se afla printre primele 10 tari in productia de lana

d) In Romania, productia totala de lana a scazut considerabil din anul 2006 pana in 2018

e) Lana contine proteine

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