Чому важливе використання сучасних технологій у системі моніторингу екологічної безпеки?

Järjestelmässä käytetään öljyä ISO VG 32. Tarkoitus on pumpata öljyä toimilaitteille putkea pitkin, jonka sisähalkaisja on d. Virtausnopeus putkessa on v. Halutaan häviöiden minimoimiseksi, että virtaus on laminaarista ja asetetaan reynoldsin luku arvoon 1900. Millainen putken sisähalkaisija tulee valita? Vastaus annetaan millimetreissä 0,1 tarkkuudella ja numeroarvon perään annetaan yksikkö.

v=3,1m/s

Які можливі заходи для покращення екологічної безпеки водойм у ЄС?

Which ONE of the following is the supreme law of South Africa?

Which ONE of the following subdivisions of the law forms part of Private law?

Moses undertakes to buy his friend Moreki, a new truck one month after Simon’s death has occurred. 

Which ONE of the following statements is CORRECT?

Chris and Paul enter into a contract in terms of which Paul has to deliver a dozen bottles of export wine to Chris. Chris has already paid the purchase price. Paul now indicates that he does not intend to perform in terms of the contract.

Which ONE of the following types of breach of contract has Paul committed?

Mosidi takes her friends Maria and Irene to a restaurant. When Mosidi wants to pay, she discovers that she does not have her purse with her. Maria agrees to pay the bill, but she suspects that Mosidi will not repay her. Maria, therefore, asks Irene if she will bind herself as surety for Mosidi’s debt. Irene agrees by nodding her head. 

Which ONE of the following statements regarding the validity of the agreement between Irene and Maria is CORRECT?

Kgomotso, a farmer, has his tractor repaired by Mpho. He informs Mpho that he wants his tractor in perfect working order for the forthcoming harvesting season. However, Kgomotso does not inform Mpho that he also uses the tractor to operate a pump for pumping water out of a small gold mine on the farm. As a result of Mpho's bad workmanship, the tractor breaks down after a month. Although Kgomotso immediately returns the tractor to Mpho to rectify his bad workmanship, Mpho only repairs it a month later. By this time, part of Kgomotso’s crop, worth R8 000 (still not harvested), has rotted in the fields. Kgomotso’s mine has also been flooded and, as a result thereof, Kgomotso has to spend R10 000 to repair the damage to the mine.  Kgomotso is unable to hire or borrow another tractor.

Which ONE of the following statements is CORRECT?

Dintwa and Angie arrange a surprise party for their friend, Tim, at an exclusive restaurant. In order to ensure Tim’s presence at the party, Dintwa arranges to pick up Tim at his flat for a game of tennis. Dintwa arrives at the agreed time, but Tim is not there. The party is cancelled, but Dintwa and Angie forfeit the booking fee they have paid. They later find out that Tim could not keep his appointment with Dintwa, since his car had broken down on his way home from work.

Which ONE of the following statements is CORRECT?