【单选题】开通代付业务时,94帐户为选输项,输入时,客户可以办理()代付,不输入时,客户只能办理()代付
【单选题】皮温比正常的皮温增加1°C时,对物质的吸收可增加多少倍
【单选题】用拼音输汉字时,字母“ü”要用英文字母( )代替
【单选题】Although he has lived with us for years, he _______ us much impression.
【单选题】用Windows进行文字输入时,需进行全角/半角切换,则按____。
【单选题】A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an _____.
B.
opposed pistons engine
D.
horizontal acting engine
【单选题】Pistons for modern engines are made of _______.
【单选题】An advantage of aluminum pistons, when compared to cast iron pistons is _____.
A.
greater high temperature strength
B.
better heat conductivity
C.
greater weight per cubic inch
D.
increased resistance to wear