There’s a feeling of unrest nowadays. A: in the air B: on the air C: by air D: in air

某公司本月管理部门发生电费7000元，银行转账支付,编制凭证为( )。 A: 借：管理费用7000贷：银行存款7000 B: 借：制造费用7000贷：银行存款7000 C: 借：管理费用7000贷：库存现金7000 D: 借：制造费用7000贷：库存现金7000

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

1kg标煤的当量热值是多少？ A: 7000大卡 B: 7000 C: 7000*4.2 kJ D: 7000*4.2

智慧职教: Compressed air is supplied by air compressors to air receivers.

日光灯、阴天、闪光灯的色温大概是多少K A: 4000 7000 10000 B: 3000 7000 5500 C: 4000 7000 5500 D: 4000 5500 7000

An air waybill is used for air transport. It is an evidence of a ( ).

The air leakage of tubular air preheater is larger than that of rotary air preheater (). A: Right B: Wrong

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.

In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve? A.Noise coming from that air starting valve B.Continuous operation of the starting air compressor C.Zero air pressure in the air starting system D.Overheated starting air pipe to the cylinder head