If the towing bridle legs are not of equal length（）.
Air compressors are NOT permitted in which space(s) on a tank barge carrying grade A cargo?（）
If the bill of lading（）contain a space in which the shipper can insert the declared value of the goods，the Shipowner is not entitled to limit his liability.
On a vessel carrying grades A，B，C or D cargoes，enclosed spaces where sources of vapor ignition are normally present shall NOT be segregated from cargo tanks by（）.
You are underway in thick fog.You have not determined if risk of collision exists.Which statement is true?（）
All units of measurement are（）, because space, time, weight, and other dimensions are not naturally divided into units.
If you are loading fruit in reefer spaces and you notice that the fruit is beginning to mold, you should（）.
A fellow __________ once told me that if you are not writing every day, then you are an amateur.
If you are over 20, you are not eligible for a discount railcard.
The chances for winning are _________ if one knows oneself but not the enemy.
If you are calling an unmarried woman, you can NOT use
If you are writing about two equal topics (or are not picking a favorite), consider using a point-by-point outline.
If you are not satisfied with the room the receptionist recommended, you may say_______
You will always get “A” s even if you are not well prepared for exams.
The important components are tested for accuracy. If they are not qualified, they need to be repaired before they can be used.
If you are not satisfied with the service, you could make a ________ to the manager.
If you have not signed a contract, you are under no______to pay them any money.
听力原文：This new kid looks like he is not all there. All he does is sit and stare out the window as if the only thing he sees is blank space.
The speaker tells the students that they are not likely to succeed if they______.
What can you always do if you are not sure what to do？
If parents are not careful, children tend to neglect their homework.
If you are in the street when an earthquake occurs, stay in A．large open space
Hans doesn’t care if they are invited to the party or not.（）
If you are not comfortable shaking hands, don't bother to practice it.（)
