Before treating the injuries, the victim’s feet should be elevated, otherwise it might make the abdominal injuries more serious.

[单选题]What should be prepared before disassembly of cylinder for main engine or auxiliary engine?

[单选题]B．efore the sales start, I make a list of ______ my kids will need for the coming season.A． whyB． whatC． howD． which

[单选题]Before replacing a piston you should check the rings to see that all clearances and gaps are within the permissible （）.A . deflectionB . discrepancyC . errorD . tolerance

[试题]B．eforeyoumailthisletter，youshouldcheckagainwhetheryouhave_______itornot.A.sunkB.sighedC.soughtD.sealed

[单选题]H．ow many tablets should one take before he goes to sleep?A．oneB．twoC．one and halfD．three

[单选题]---What should I do first before boarding? ----().A．You may ask the policeman there to help.B．Please go to the airline counter to check-in for your flight.C．You should wait and see.D．You have to go there to check in for your flight.

[问答题]We should make best use of time.

[单选题]If you make apromise,you should [fulfill] it.A.keepB.takeC.tryD.win

[单选题]A．ll the dishes in this menu, otherwise stated, will serve two to three people.A． as B. if C. though D. unless

[单选题]Before you decide on a vocation, it might be a good idea to consult a few g