單項(xiàng)選擇題牛結(jié)節(jié)蟲(chóng)的感染性階段是()

A.2期幼蟲(chóng)
B.三期幼蟲(chóng)
C.1期幼蟲(chóng)
D.蟲(chóng)卵


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1.單項(xiàng)選擇題牛捻轉(zhuǎn)血矛線蟲(chóng)的感染性階段是()

A.2期幼蟲(chóng)
B.帶鞘的三期幼蟲(chóng)
C.1期幼蟲(chóng)
D.蟲(chóng)卵

2.單項(xiàng)選擇題馬副蛔蟲(chóng)的感染性階段是()

A.含有2期幼蟲(chóng)的感染性蟲(chóng)卵
B.三期幼蟲(chóng)
C.1期幼蟲(chóng)
D.蟲(chóng)卵

3.單項(xiàng)選擇題下列蟲(chóng)體具有漏斗狀口囊的有()

A.牛仰口線蟲(chóng)
B.捻轉(zhuǎn)血矛線蟲(chóng)
C.豬蛔蟲(chóng)
D.旋毛蟲(chóng)

4.單項(xiàng)選擇題牛仰口線蟲(chóng)線蟲(chóng)主要感染階段為()

A.感染性蟲(chóng)卵
B.第一期幼蟲(chóng)
C.第三期幼蟲(chóng)
D.含第二期幼蟲(chóng)的蟲(chóng)卵

5.單項(xiàng)選擇題下列蟲(chóng)體具有發(fā)達(dá)交合傘及人字背肋的是()

A.豬蛔蟲(chóng)
B.鞭蟲(chóng)
C.旋毛蟲(chóng)
D.捻轉(zhuǎn)胃蟲(chóng)