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题目
更多“it is noted here because Americans have traditionally viewed success in one’s role”相关的问题
第1题
B: Sure．We are inviting tender for the construction of a thermal power plant．We already got more than ten tenders from various countries.
A: We learnt that this project is very competitive．When do you start to the bid？
B: The end before this month．Tenders received after the deadline will not be considered．If you are interested in this tender, you can have a set of tender documents and get the details of the requirements.
A: What should we prepare if we would like to take part in the bid？
B: First, you're required to get the bid documents against payment RMB 500 yuan．The document should be designated department with in designated time.
A: Shall we pay tender bond？
B: Yes．If you fail to furnish a tender bond before the opening of the tender, your tender will not be considered．And detailed engineering of the works, technical specifications and other tender documents should precede the invitation to tender for the contract.
A: I see.
B: It's well known that your company has great experience in this field．We hope you will consider this tender invitation carefully.
A: I think we will.
第6题
第二组：Magnetic pickup (MPU) sensors are devices which can be used in conjunction with electronic control modules for monitoring of parameters such as speed, direction of rotation and a variety of alarm conditions. MPU sensors are available in various sizes and types. Following are some guidelines for their selection on industrial engines. MPUs are located near a flywheel, camshaft or other type of gear with rotation relative to engine speed. The passing of the gear teeth through the MPU tip (pole) generates a voltage and frequency. This frequency is converted to a speed reference by a control module. It should be noted here that most MPUs will develop similar signals. However, the magnitude and strength of the signal is dependent on the size of the sensor in relation to the gear teeth, the clearance between the pole piece and the gear teeth, and various other factors. As a general rule of thumb, the following standards should be met:
①Dimension of tooth top surface should be equal to or more than the pole piece diameter.
②Tooth height should be equal to, or more than the space between teeth.
③The space between teeth should be approximately three times the pole piece diameter.
④Air gap (clearance) between tooth and pole piece should be between 0.015" to 0.030". MPUs
normally have 3/8", 5/8" threads and 2", 3" and 4" lengths. Determining which size is appropriate
depends on the space available for installation, the availability of pre-drilled holes and consideration to
those rules mentioned above. In most cases, these will be the only factors affecting the selcetion of a
MPU.
MPUs can be used to ____.①sense speed ②supply alarm ③sense direction of rotation.
A.①②
B.②③
C.①③
D.①②③
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