The primary purpose of a load line is to establish required（）.

[单选题]Load line regulations are designed to insure that a vessel has adequate structural strength and sufficient（）.A . lifesaving equipmentB . stabilityC . mooring tensionD . riser tensio

[单选题]A load line is assigned to a ship to insure adequate stability and（）.A . mooring tensionB . riser tensionC . lifesaving equipmentD . structural strength

[单选题]What is the author′s primary purpose in writing the passage?A.Revealing the

[单选题]The purpose of the writing is to ______.A． promote scenic spots in Canada B. advertise for the sports in BanffC． introduce tourist activities in Banff D. describe breathtaking views in Banff

[单选题]The purpose of the memo is toA．attract students’interest in the programmeB．require the parents to select a sport for their chinldC．help the staff explain the programme to the parentsD．remind teachers and lifeguards to be present on time

[单选题]D．I was in line waiting to pay. In line there were two people before me. A little boy was buying some rather strange clothes. He chatted with anyone who was interested in the clothes and soon we learnt that he was going to a kindergarten(幼儿园) party.

[名词解释] Primary immunodeficiency disease

[单选题]（ ）The purpose of the three ads is to __________.A．sell these books to the childrenB．help children learn EnglishC．help children learn about natureD．use a dictionary to pronounce correctly

[单选题]The main purpose of the text is to _______.A． describe children’s thinkingB．answer some questions children haveC．stress the importance of communicationD．advise parents to encourage their children

[单选题]The purpose of the program is to provide training for employees so that they can work ______.A． lateB． laterC． latelyD． latest