The new company increased the number of telephone switchboards and introduced the use of electronic switches instead of manual operators. Later in the 20th century as cables were laid across the ocean floor, this made communication with different continents possible, it was very expensive for people in the rural areas of the west to set up phone service though. In order to lower the prices of the telephone services, the United States government forced the telephone company to allow local telephone companies to offer competing services. When the private "baby bells" were allowed to operate, the prices of telephone service fell dramatically.
Where was the first telephone service in America established?
A.New York.
B.WashingtonD.C.
C.Philadelphia.
D.Chicago.
第1题
已知函数f的原型是:void f(int*a,long &b);,变量v1、v2;的定义是int v1;long v2;正确,的调用语句是
A.f(v1,& v2);
B.f(v1,v2);
C.f(& v1,v2);
D.f(&v1,&v2);
第2题
已知函数f的原型是void f(int*a,long&B.;,变量v1、v2的定义是: int v1;long:v2; 下列调用语句中正确的是()。
A.f(v1,&v2);
B.f(v1,v2);
C.f(&v1,&v2);
D.f(&v1,v2);
第3题
已知函数f的原型是void f(int *a,long&B) ;,变量v1、v2的定义是: int v1:long v2: 下列调用语句中正确的是
A.f(v1,&v2);
B.f(v1,v2);
C.f(&vl,&v2);
D.f(&vl,v2);
第4题
A.f(V1,&V2);
B.f(v1,v2);
C.f(&v1,v2);
D.f(&v1,&v2);
第5题
A.f(v1,&v2);
B.f(v1,v2);
C.f(&v1,&v2);
D.f(&v1,v2);
第6题
A.f(v1,&v2);
B.f(v1,v2);
C.f(&v1,&v2);
D.f(&v1,v2);
第7题
己知函数f的原型是“void f(int*x, int &y);”,变量v1、v2的定义是“int v1, v2;”,下列调用语句中,正确的是()。
A) f(v1, v2);
B) f(v1, &v2);
C) f(&v1, v2);
D) f(&v1, &v2);
第8题
A.f(x, y)
B.f(x, &y)
C.f(&x, y)
D.f(&x, &y)
第9题
A.f(v1,&v2)
B.f(v1,v2)
C.f(&v1,&v2)
D.f(&v1,v2)
第10题
已知函数f的原型是“voidf(int*x,int&y);”,变量v1、v2的定义是“intv1,v2;”,下列调用语句中,正确的是()。
A.f(v1,v2)
B.t(v1,&v2)
C.f(&v1,v2)
D.f(&v1,&v2);
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