（）is the disadvantage for air transportation?A、Quick but not safeB、Less frequencyC、It can’t lift heavy goodsD、the highest cost in all transport modes
（）is the disadvantage for air transportation?
- A、Quick but not safe
- B、Less frequency
- C、It can’t lift heavy goods
- D、the highest cost in all transport modes
相关考题：
According to the passage，what is one disadvantage of skyscrapers that have mirrored walls?A. The exterior surrounding air is heated。B. The windows must be cleaned daily.C. Construction time is increased.D. Extra air-conditioning equipment is needed.
According to the passage, what is one disadvantage of skyscrapers that have mirroredwalls?__________A.The exterior surrounding air is heatedB.The building materials are very expensiveC.Construction time is increasedD.Extra air-conditioning equipment is needed
GC.HPLC法中的分离度（R）计算公式为（）AR=2（tR1－tR2）/（W1－W2）BR=2（tR1+tR2）/（W1－W2）CR=2（tR1－tR2）/（W1+W2）DR=（tR2－tR1）/2（W1+W2）ER=2（tR2－tR1）/（W1+W2）
GC.HPLC法中的分离度（R）计算公式为（）A、R=2（tR1－tR2）/（W1－W2）B、R=2（tR1+tR2）/（W1－W2）C、R=2（tR1－tR2）/（W1+W2）D、R=（tR2－tR1）/2（W1+W2）E、R=2（tR2－tR1）/（W1+W2）
表格语法格式正确的是（）。A、〈table〉〈tr〉〈td〉内容〈/td〉〈/tr〉〈/table〉B、〈table〉〈tr〉内容〈/tr〉〈td〉内容〈/td〉〈/table〉C、〈table〉〈tr〉〈th〉内容〈/th〉〈td〉内容〈/td〉〈/tr〉〈/table〉D、〈table〉〈tr〉〈td〉〈th〉内容〈/th〉〈/td〉〈/tr〉〈/table〉
What is the disadvantage for air transportation? （）A、Quick but not safeB、Less frequencyC、It can’t lift heavy goodsD、The highest cost in all transport modes
单选题（）is the disadvantage for air transportation?AQuick but not safeBLess frequencyCIt can’t lift heavy goodsDthe highest cost in all transport modes
单选题Air blowing from the intake air filter of an operating air compressor indicates （）.Abroken inlet valvesBbroken discharge valvesCpulsations in the air distribution systemDoverloading of the air distribution system
单选题If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the （）.Acombustion control air systemBsupply air systemCships service air systemDlow pressure deck air system
单选题What is the disadvantage for air transportation? （）AQuick but not safeBLess frequencyCIt can’t lift heavy goodsDThe highest cost in all transport modes
单选题If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the （）.Acontrol air systemBforced draft air systemCsupply air systemDships service air system