【单选题】Which of the following is true according to the conversation?
A.
The man had to wait over two weeks for the vocabulary book.
B.
The salesperson wrapped the grammar book for the man.
C.
The man decided to go to another bookstore for the vocabulary book.
D.
The salesperson took down the man' s contact information for future notice.
【简答题】第九章附加题: 使用单片机处理器,利用IIC总线技术,自行挑选一个基于IIC总线技术的外设(如:DS1621或IIC存储卡等),设计接口电路, 画出仿真电路图, 编写驱动程序 ,调试程序,输出 运行结果。
【简答题】能使转向轮偏转以实现汽车转向的一整套机构称为_____________。
【单选题】Peter had to wait two hours at the doctor’s ________.
【简答题】第九章附加题:使用单片机处理器,利用IIC总线技术,自行挑选一个基于IIC总线技术的外设(如:DS1621或IIC存储卡等),设计接口电路,编写驱动程序。写出运行结果。
【单选题】有一个量程为300伏,(即测量范围是0~300伏)的电压表,它的内阻是40千欧,用它测量电压时,允许流过的最大电流是()。
【单选题】保证测量仪器规定的准确度、满足误差在规定极限之内的量值范围,即为_________。
【单选题】We missed our train, and ________ the next train was delayed, ________ we had to wait for another two hours.
C.
what was worse; therefore