厨房的排油烟管道与竖向排风管应按规范及设计要求设置()℃防火阀。
A. 70
B. 130
C. 150
D. 280
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Which of the following problems represent one possible cause of high lube oil consumption
A. Worn intake valve guides
B. Pitted pre-combustion chambers
C. Loose valve tappets
D. High exhaust back pressure
The nut is loose. Lend me _____, please.
A. an oil can
B. a hammer
C. a spanner
试卷一:就业的挑战
Directions:For this part,you are allowed 30 minutes to write a short essay onThe challenge of starting a career after graduation.You should write at least 120 words but no more than 180 words.
Patrick worked hard day and during the summer holiday____he could pay for the lost car.
A. not until
B. as long
C. the moment
D. in order that