PLC的指令语句由哪几部分构成,格式是什么?
参考答案:
①PLC的指令语句由指令(操作码或助记符)和地址码(操作数和数据)组成;
②其格式为:指令地址号,如:LDX400。
For a European call option X(strike price)=25 and a European call option X=30 on the same stock with the same time to expiration, it is true that, when the 30 call is at or in the money, the pest statement we can make is:()
A. the value of the 25 call is greater than or equal to the value of the 30 call.
B. the 30 call is worth at least as much as the 25 call.
C. the value of the 25 call is greater than the value of the 30 call.
最常见的良性骨肿瘤为
A.软骨瘤
B.骨软骨瘤
C.骨化性纤维瘤
D.骨巨细胞瘤
E.骨瘤