【判断题】如L/C规定保险单做成抬头为“Toorder”,则在被保险人一栏内直接显示“Toorder”,再由保险人背书。( )
【单选题】下列说法正确的是
B.
纤维素、蔗糖、葡萄糖和脂肪在一定条件下都可发生水解反应
【多选题】The power trmin serves two functions:
A.
it transmits power from engine to the drive wheels.
B.
it fires the spark plug.
C.
it varies the amount of torque.
D.
it sends a liquid coolant through passages in the engine block and heads.
【简答题】若(a﹣2009) 2 +(2011﹣a) 2 =2,则(2011﹣a)(a﹣2009)= _________ .
【简答题】若(a-2009) 2 +(2011-a) 2 =2,则(2011-a)( a-2009)=_________。
【简答题】若(a-2009) 2 + 2 =2,则(a-2009)=______.