A律13折线通常采用的量化级数为（）。
A、16
B、256
C、128
D、2048
参考答案：B
根据提示和句意完成下列句子。
1.I never feel ________ (无聊的) or unhappy when he is with me.
2.My favourite s________ are Science and Chinese.
3.Mr Wu ________ (邀请) me to join in their trip yesterday.
4.Peter fell off the ladder yesterday. L________, he didn't hurt himself.
5.If someone shows bad manners to others. He is i_________.
某分部工程有两个施工过程，各分为4个施工段组织流水施工，流水节拍分别为3天、4天、3天、3天和2天、5天、4天、3天，则流水步距和流水施工工期分别为( )天。
A．3和16B．3和17C．5和18D．5和19
