乘客遗失的物品要由()保管,并及时通告,寻找(),做好登记、认领工作。 发布时间:2017-04-16 15:20 │ 来源:www.tikuol.com 题型:填空题 问题: 乘客遗失的物品要由()保管,并及时通告,寻找(),做好登记、认领工作。
题型:填空题 We should collect some rubbish _____ the environment.[ ]A. help to protect B. to help protectC. to help protecting D. helping protect 查看答案
题型:填空题 Yesterday we went to visit the farm ____ my father used to work for nearly ten years.A.in which B.thatC.where D.which 查看答案
题型:填空题 氯霉素的抗菌作用机制是A.影响胞浆膜通透性B.与核蛋白体30S亚基结合,抑aa-tRNA进入A住C.与核蛋白体50S亚基结合,阻断转肽作用和mRNA位移D.与核蛋白体50S亚基结合,抑制肽酰基转移酶的活性E.特异性地抑制依赖于DNA的RNA多聚酶的活性 查看答案