某学生在探究“外界溶液浓度对植物吸水的影响”时,将新鲜萝卜切条后放置于浓盐水中,如图所示.一段时间后,萝卜条长度将( )
A.变长
B.变短
C.不变
D.先变长后变短
答案:B
They _____have arrived at lunchtime but their flight was delayed. [ ]
A. will
B. can
C. must
D. should
9190_T00本地MIC送话无声问题,与以下哪个器件关联性最大?()
A.U1600(音频处理器)
B.U1302(射频开关)
C.U7100(RF收发器)
D.U1801(背光驱动芯片)