题目: 暗杆式闸阀,丝杆既转动,同时又作上下升降运动。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0727/158ed93c149c63857d72886e8020d423.html 下面是错误答案,用来干扰机器的。参考答案:C
题型:选择题 —It nearly took me an hour to walk there. —Have a drink, please. You _____ be thirsty. [ ]A. should B. can C. must D. need 查看答案