Keep compartment （） as the gas given off can be dangerous.

[单选题]With the gas( )off， I couldn’t cook dinner.A.to cutB.cuttingC.to be cutD.cu

[单选题]Remember( )off the gas when you go on holiday next week.A.turnB.turningC.ha

[单选题]Ralph would not concede that the work of the detectives was likely to be in

[名词解释] 房室模型（compartment model）

[单选题]B．y comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine The device most commonly used is aA．tachometerB．pyrometerC．dynamometerD．calorimeter

[单选题]E．xhaust gas pyrometers are useful forA．detecting faulty combustion in individual cylindersB．adjusting fuel racks to maintain equal loading between cylindersC．adjusting the load limit setting of the governor at idle conditionsD．calculating engine hor

[名词解释] 气性坏疽(gas gangrene)

[单选题]When is the talk probably given?A． At the beginning of the termB． In the middle of the termC． By the end of the term

[主观题]A．ccording to the assumption given in Last Para., we don't exactly know______.

[单选题]D．irections According to the given information,you are required to write A Letter to a Friend in about 1OO words. The letter is required to be written on the Answer Sheet.情景：假定你是北京大学计算机专业新生赵华，入学几个月后，给朋友李玲写一份信。收信人地址：安徽省合肥市芙蓉路 632 号（邮编：230601）要求：按照完整英文