判断题高速电梯:电梯额定速度2.5m s≤υ<6.0m s的电梯。
判断题泪液的渗透压的正常值为0.90%~1.20%当量氯化钠。
单项选择题The damaged trucks were in the way,but our driver got______somehow.()
A.overB.rid ofC.roundD.through
单项选择题A deadlock was reached in the negotiations,as neither side would give______the other.()
A.inB.way toC.upD.away
单项选择题I listened to the speech carefully,but still I couldnt take it all______.()
A.forB.inC.awayD.on