【单选题】Polychronic people may often delay their appointments because ______ .
A.
being late is a custom to show importance
B.
things are often changing until the last minute
C.
they don't have plans for the future at all
D.
they are too busy to be punctual
【单选题】定温、定压下,下列哪项可以作为过程自发性的判断依据( )
【单选题】笼形异步电动机降压启动能减少启动电流 , 但由于电机的转矩与电压的平方成 (), 因此降压启动时转矩减少较多。
【单选题】Members of a polychronic culture would probably
A.
finish a telephone conversation before acknowledging a friend who has stepped into their office.
B.
arrive promptly at meetings.
C.
consider it a waste of time to begin a meeting with half an hour of socializing.
D.
spend time getting to know a person before doing business with her or him.
【单选题】关于细胞因子的作用特点,下列哪项是错误的
【判断题】Americans are more polychronic than Chinese.
【单选题】MHC分子介导免疫排斥 ,并具有多种功能,下列哪一项不是MHC分子的功能()