对虾养殖中,养殖水体的最适pH值范围是()、最最适DO值范围为()毫克/升、最适透明

题型:填空题

问题:

对虾养殖中,养殖水体的最适pH值范围是()、最最适DO值范围为()毫克/升、最适透明度范围为()厘米。

考点:水产动物疾病学水产动物疾病学题库
题型:填空题
My uncle is a farmer. He has ninety       trees on his farm. My uncle and my aunt      pick(采摘) all the apples in fall(秋天),       they ask my parents and me to go to       them every year. It’s Sunday. My parents don’t go to        and I don’t go to school. So we’ll go to the      . We get up early(早) in the      . My mother is in her        clothes. My father gets many kinds of food for my uncle’s       in a shop. She likes them very much. I think my uncle and aunt will     us many apples after that. I like to work on the farm.
小题1:
A.appleB.orangeC.bananaD.family
小题2:
A.can’tB.don’tC.aren’tD.doesn’t
小题3:
A.onB.so(所以)C.butD.and
小题4:
A.lookB.carryC.helpD.take
小题5:
A.workB.shopC.schoolD.home
小题6:
A.officeB.hospitalC.homeD.farm
小题7:
A.eveningB.afternoonC.morningD.sunday
小题8:
A.oldB.newC.niceD.good
小题9:
A.sonB.daughterC.fatherD.parents
小题10:
A.takeB.bringC.getD.give
题型:填空题

This small town is beautiful, but it snows ______there in January.

A.a lot

B.a lot of

C.lots of

D.many

题型:填空题

婴儿对食物味道非常敏感,适宜添加辅食的时期是()

A.1~2个月

B.2~3个月

C.3~4个月

D.4~5个月

E.5~6个月

题型:填空题

化油器有哪些主要装置各有什么作用?

题型:填空题

鼻窦黏液囊肿最常见于()

A.上颌窦

B.额窦

C.筛窦

D.蝶窦

E.无差别

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