【单选题】When a tax is placed on a good
A.
the price paid by buyers rises, and the price received by sellers rises.
B.
the price paid by buyers rises, and the price received by sellers falls.
C.
the price paid by buyers falls, and the price received by sellers rises.
D.
the price paid by buyers falls, and the price received by sellers falls.
【单选题】FreeRTOS 中任务( Task )可能处于:运行态、阻塞态、就绪态、挂起态四种之一,不同状态之间可以进行转换,但以下不可能直接实现的转换是:( )
【判断题】( )在偶校验法中,无论信息位多少,监督位只有 位,它使码组中“1”的数目为偶数。
【单选题】当一条船经过的时候,他们本来可以得救,但为什么作为求救信号的火熄灭了 ?
【单选题】When a tax is placed on the buyers of a product, the
A.
size of the market decreases.
B.
effective price received by sellers decreases, and the price paid by buyers increases.
C.
demand for the product decreases.
D.
All of the above are correct.
【简答题】把下列句子变成被动词态。 1. Do they teach Japanese in their school? ______________________________________________________ 2. We heard her sing in the room. ______________________________________________________ ...
【单选题】When a tax is placed on the buyers of a product, a result is that buyers effectively pay
A.
less than before the tax, and sellers effectively receive less than before the tax.
B.
less than before the tax, and sellers effectively receive more than before the tax.
C.
more than before the tax, and sellers effectively receive less than before the tax.
D.
more than before the tax, and sellers effectively receive more than before the tax.
【单选题】When a tax is placed on the sellers of a product it will shift the
【简答题】uC/OS-II的每个任务都处在休眠态、就绪态、___【31】____态、挂起态和被中断态5种状态之一的状态下。其中,在就绪态中霤/OS-II就绪表为每一个任务提供一个二进制位,登记该任务是否就绪,就绪时对应位的值为___【32】____。