There’s a feeling of unrest nowadays.
A: in the air
B: on the air
C: by air
D: in air
A: in the air
B: on the air
C: by air
D: in air
A
举一反三
- Michael’s vacuum cleaner squealed loudly, shook violently, and _____. A: filled the air with dust B: dust filled the air C: dust was filled in the air D: dust was filled with the air
- 4. From the control tower, air traffic controllers coordinate aircraft movement both ________ and on the ground. A: on the air B: in the air C: at the air D: of the air
- 智慧职教: Compressed air is supplied by air compressors to air receivers.
- Whether we go to Paris is ______. A: [A] on the air B: [B] in the airs C: [C] in the air D: [D] with the air
- What is the talk mainly about A: The definition of air pollutant. B: The causes of air pollution. C: The dangers of air pollutants. D: Ways to fight air pollution.
内容
- 0
According to the U. S Air Force organization system, --------has always been the Air Force prime war-fighting system? A: the air division B: the wing C: the NAF D: the group
- 1
Compressed air is supplied by air compression to （）. A: the air receivers B: the starting valves C: the cylinder covers D: the distributor
- 2
Do you mind ________? A: to turn up the air conditioner B: turn up the air conditioner C: turning up the air conditioner D: to turning up the air conditioner
- 3
The air leakage of tubular air preheater is larger than that of rotary air preheater (). A: Right B: Wrong
- 4
An air waybill is used for air transport. It is an evidence of a ( ).