All persons or vessels within the lock area，including the lock approach channels，come under the authority of the（）.

You（）to lock the door at night.

You（）to lock the door at night.

Which of the following best represents the order from a harsh command to a very polite request? a. Could you close the door? b. Close the door. c.Please close the door. d. Would you please close the door?

Close the door，please的中文意思是（）。

Please place your keys in the box at reception when leaving the hotel.

Would you please figure（）the quantity of the cargo?

Symmetric, or private-key, encryption is based on a secret key that is shared by both communcating parties. The （ ） party uses the secret key as part of the mathematical operation to encrypt （ ） text to cipher text. The receiving party uses the same secret key to decrypt the cipher text to plain text. Asymmetric, or public-key, encryption uses two different keys for each user: one is a （ ） key known only to this one user; the other is a corresponding public key, which is accessible to anyone. The private and public keys are mathematically related by the encryption algorithm. One key ia used for encyption and the other for decryption, depending on the nature of the communication service being implemented. In addition, public key encryption technoligies allow digital （ ） to be placed on messages. A digital signature uses the sender&39;s private key to encrypt some portion of the message. When the message is received, the receiver uses the sender&39;s （ ） key tp decipher the digital signature to verify the sender&39;s identity.

Which of the foUowing best represents the order from a harsh command to a very polite request? a. Could you close the door? b. Close the door. c. Please close the door. d. would you please close the door?

Would you please （）the mooring lines ?

Would you please adjust the gangway? （）

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.