You are underway at 5 knots and see on your radar a contact 10 miles directly astern of you. 12 minutes later，the contact is 8 miles directly astern of you. What is the estimated speed of the contact? （）
A: Dead in the water
B: 1 knot
C: 10 knots
D: 15 knot
A: Dead in the water
B: 1 knot
C: 10 knots
D: 15 knot
举一反三
- We are writing to （） you in the hope of entering into business relations with you. A: get in touch B: approach with C: contact D: contact with
- You're talking with a group of four people. Do you make eye contact with ...? A: just the person to whom you're speaking at the moment. B: each of the four, moving your eye contact from one to another. C: no one particular person (not looking directly into anyone's eye.
- If you do not receive e-mail bank statements we send you monthly, we'll contact you ______ instead. A: unanimously B: mainly C: cautiously D: directly
- A firm eye contact makes your audience feel respected, and makes your words more trustworthy. To speak effectively, you need genuine eye contact, because this allows you to see the audience’s feedback.
- Which of the following knots is not used in surgery ( ) A: Square knot B: Slip knot C: Surgical knot D: Triple knot