焊工防护鞋应具有()、抗热、不易燃、耐磨损和防滑的性能。 A.绝缘 B.耐用 C.耐

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问题:

焊工防护鞋应具有()、抗热、不易燃、耐磨损和防滑的性能。

A.绝缘

B.耐用

C.耐酸

考点:电(气)焊工安全知识应知应会电(气)焊工安全知识应知应会题库
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()代表数字量输出

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"What else do you need, Linda?"

"_____ else, I think. We've got enough." [ ]

A. Something

B. Anything

C. Nothing

题型:单项选择题

You can see lots of kangaroos (袋鼠) in Australia, and not only in zoos but also outside the cities and towns. You can see them everywhere. Kangaroos are very popular in Australia. They have very strong legs, so they are very good at jumping. Their tails (尾巴) are very strong, too, so when they want to have a rest, they rest on their tails. Kangaroos are also good at looking after their babies. Mother kangaroos keep their babies safe in their pockets.

小题1:There are many kangaroos _____.

A.from Australia

B.in America

C.in Australia

D.from America小题2: Where can we see kangaroos in Australia?

A.in cities

B.in towns

C.in parks

D.everywhere小题3:Why are kangaroos very good at jumping?

A.because they are very healthy

B.because they have strong tails

C.because they have strong legs

D.because they have big pockets小题4:How do kangaroos rest when they want to rest?

A.on their legs

B.on their hands

C.on their tails

D.on their back小题5:What are kangaroos good at doing?

A.they are good at looking after their babies

B.they are good at jumping

C.they are good at resting on their tails

D.A, B and C

题型:单项选择题

单级减速传动的圆柱齿轮副的传动比要求为()

A.i≤3

B.i≤6

C.i≤8

D.i≥5

题型:单项选择题

集合资产管理计划管理人承诺以诚实信用、谨慎的原则管理和运作本集合资产时,可向委托人承诺最低收益。( )

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