－ I've passed the examination.－ __________A：What a pity.B：I hate the exam.C：Congratu

- I've passed the examination.- __________

A：What a pity.

B：I hate the exam.

C：Congratulations.

D：Come on.

－－ I have passed the maths exam!－－ _________. Congratulations!A.SorryB.Come onC.Well do

_______ since I began to learn English.
A、Six years has passed
B、Six years passed
C、It had been six years
D、It was six years

请帮忙给出正确答案和分析，谢谢！

隔爆型电气设备的标志符号由()组成。

隔爆电气设备的标志由（）来组成。

隔爆型电气设备的标志符号由()组成。

Brick by Brick （BBB) is a building business that provides a range of building services to
Brick by Brick (BBB) is a building business that provides a range of building services to the public. Recently they have been asked to quote for garage conversions (GC) and extensions to properties (EX) and have found that they are winning fewer GC contracts than expected.
BBB has a policy to price all jobs at budgeted total cost plus 50%. Overheads are currently absorbed on a labour hour basis. BBB thinks that a switch to activity based costing (ABC) to absorb overheads would reduce the cost associated to GC and hence make them more competitive.
You are provided with the following data:

A typical GC costs $3,500 in materials and takes 300 labour hours to complete. A GC requires only one site visit by a supervisor and needs only one planning document to be raised. The typical EX costs $8,000 in materials and takes 500 hours to complete. An EX requires six site visits and fi ve planning documents. In all cases labour is paid $15 per hour.
Required:
(a) Calculate the cost and quoted price of a GC and of an EX using labour hours to absorb the overheads. (5 marks)
(b) Calculate the cost and the quoted price of a GC and of an EX using ABC to absorb the overheads. (5 marks)
(c) Assuming that the cost of a GC falls by nearly 7% and the price of an EX rises by about 2% as a result of the change to ABC, suggest possible pricing strategies for the two products that BBB sells and suggest two reasons other than high prices for the current poor sales of the GC. (6 marks)
(d) One BBB manager has suggested that only marginal cost should be included in budget cost calculations as this would avoid the need for arbitrary overhead allocations to products. Briefl y discuss this point of view and comment on the implication for the amount of mark-up that would be applied to budget costs when producing quotes for jobs. (4 marks)


请帮忙给出正确答案和分析，谢谢！

英译汉：I've lost interest in my work.

I've（）a big mouth

I've got tired ____ walking all day and want to have a rest.

–How long have you been graduated from your college? –_________