更多"Travelers by Bel Air know that they"的相关试题:
[单项选择]People who fly with Bel Air ______.
A. know they will travel a lot
B. get what they want quickly and safely
C. know that everything will be just fight
D. always travel right across the world
[单项选择]We all know the troth that ______ there are air, water and sunlight, there are living things.
A. in wherever
B. that wherever
C. where
D. that
[单项选择]We all know the truth _______ there are air, water and sunlight, there are living things.
A. wherever
B. that
C. where
D. that wherever
[单项选择]The Martian surface temperature is 100 degrees below zero at night, so that butter put outside will not _______.
A. thaw
B. dissolve
C. melt
D. fuse
[单项选择]According to the last paragraph, consumers who believe that organic foods are better than conventionally grown foods are often ______.
A. careless
B. mistaken
C. thrifty
D. wealthy
[单项选择]According to the last paragragh, consumers who believe that organic foods axe better than conventionally grown foods are often ______.
A. careless
B. mistaken
C. thrifty
D. skeptical
[单项选择]A person who is waiting for the return to work belongs to ______
(a)the employed. (b)the unemployed.
(c)non-labor force. (d)those who have lost confidence.
[单项选择]What should travelers do if staying in a country for a month
A. Register with their embassy.
B. Leave their passport in the hotel.
C. Find a good hotel.
D. Have extra passport photos taken.
[单项选择]______ is the key to prevent travelers from feeling angry.
A. The walk from the plane to the baggage reclaim
B. The waiting time aspect at the baggage reclaim
C. An illusion of "social justice"
D. The realization of "equal rights"
[多选题]2BEl系列瓦斯泵气量减少的原因是（ ）。
A.填料密封泄漏
B.吸人侧泄漏
C.工作水过少，或工作水温度过高
D.皮带打滑，转速下降
[单选题]The _______ displays the speed of the airplane through the air by comparing ram air pressure with static air pressure.
A.altimeter
B.airspeed indicator
C.vertical speed indicator
D.attitude indicator
[单项选择]A lot of travelers ______ down the wrong road by the wrong sign.
[单选题]The amount of moisture the air can hold depends on air temperature _______ is the temperature at which air becomes saturated.
A.Dewpoint
B.Humidity
C.Moisture
D.Relative humidity
[多选题]2BEl系列瓦斯泵运转不正常的原因是（ ）。
A.底座与基础接触不良，地脚螺丝松动
B.机组整体振动或接管振动
C.叶轮与分配板磨擦
D.汽蚀或皮带松弛，运转声音异常
[多选题]2BEl系列瓦斯泵轴承部位发热的原因是（ ）。
A.电机、减速机、泵安装不对中
B.轴承安装不当
C.润滑不良，油脂干涸或太多
D.轴承被锈蚀，滚道划伤
E.V型轴封圈与轴承内盖压得过紧
[多选题]2BEl系列瓦斯泵气量减少的处理方法是（ ）。
A.检查泵间隙是否太大，必要时车短泵体
B.拆开泵检查密封面密封材料的稳定性，如已失效，应重新密封
C.更换分配板、阀板
D.更换阀球
[判断题]2BEl系列瓦斯泵自动排水阀泄漏，易造成气量减少。
A.正确
B.错误
[判断题]2BEl系列瓦斯泵启动水位过高，易造成启动困难。
A.正确
B.错误
[多选题]造成2BEl系列瓦斯泵启动困难的原因可能是（ ）。
A.较长时间停机，泵内生锈
B.填料太干、太硬
C.启动水位过高
D.皮带过紧
