[单选题]If it becomes necessary for a stand-on vessel to take action to avoid collision，she shall NOT，if possible，______.
[单选题]Which one of the following rules does not concern two power-driven vessels meeting end or nearly end on so as to involve risk of collision？
[单选题]When action to avoid a close quarters situation is taken，a course change alone may be the most effective action provided that ______.
[单选题]Which of the following is usually NOT required in preparing a hold for reception of a bulk grain cargo?
[单选题]According to the SOLAS requirements, how many activation points are needed for the Ship Security Alert System?
[单选题]It is important to get familiarized with the emergency exits onboard. When should this be done?
[单选题]Weather observations provided by each weather station include all of the following except ______.
[单选题]A channel is stated as having a controlling depth of 38 feet. Which statement is TRUE? ________.