分布数列中,当标志值较小而权数较大时,计算出的算术平均数______。
A.接近标志值大的一方B.接近标志值小的一方C.接近于大小合适的标志值D.不受权数的影响
参考答案:B
She knows that as a secretary she must be pleasant and helpful no matter how busy she is or what kind of ____ she may be in.
A.mood
B.mind
C.form
D.thought
APU进气门电源是()
A.28V DC
B.115V AC
C.220V AC
D.36V DC