Which kind of packaging is directly contact with the contents?
举一反三
- The inner packaging of the medicine does not directly contact the medicine ( )
- which one can directly contact with water？ A: Sodium metal B: Calcium carbide C: Metal hydride D: Sulphur powder
- Which are included in the contents of a proposal?
- Which kind of body language are mentioned in the video？ A: Body posture B: Facial expressions C: Gestures D: Eye movements E: Physical contact (Touch)
- 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