【判断题】When greeting guests, we must be polite and patient.
【单选题】We must be patient ______ children.
【单选题】The main purpose of establishing international trade practices, rules and conventions is to
A.
improve relations between countries
B.
facilitate a favorable position in transactions
C.
standardize transaction conditions to reduce disputes
D.
increase foreign exchange income.
【简答题】One of the international treaties on trade that our country enters into is The United Nations Conventions for( ).
【简答题】当晶体管工作在____区时, I C ≈ βI B ,条件是发射极____偏置,集电极____偏置。
【单选题】根据晶体管的输出特性曲线,当其工作在( )时,I C ≈0。
【判断题】CAPI interviewing is inappropriate for conducting B2B research at trade shows or conventions.
【单选题】“国美”为了促进电视机销售,采用了赊销的方式。规定付款期限为一个月,在10天内付款的打折扣5%,20天内打折扣3%,按期付款的无折扣优待。这种策略称为 ( )