選擇題
1:異步復(fù)接二次群一幀中的插入標(biāo)志碼有
a.4 bit
b.6~7 bit
c.12 bit
d.最多28 bit
2:條件轉(zhuǎn)移指令jnbe產(chǎn)生轉(zhuǎn)移的條件是
a.cf=0 and zf=0
b.cf=0 and zf=1
c.cf=1 and zf=0
d.cf=1 and zf=1
2cm零次群速率為。
a.8kb/s
b.16kb/s
c.32kb/s
d.64kb/s
3:array dw 6， 9， $+4， 10h， 1，$+4
┇
mov ax， array+4
設(shè)變量array的偏移量是0084h，上述指令執(zhí)行后ax中的內(nèi)容是
a.0009
b.008ch
c.0090h
d.0010h
4:表示過程定義結(jié)束的偽指令是
a.endp
b.ends
c.end
d.endm
5:數(shù)字光纖傳輸系統(tǒng)屬于
a.基帶傳輸
b.頻帶傳輸
c.數(shù)字?jǐn)?shù)據(jù)傳輸
d.無線傳輸
7:設(shè)非壓縮bcd碼al=09h，bl=04h在執(zhí)行sub al，bl指令后應(yīng)選的校正指令是
a.daa
b.aas
8.C++類筆試題
求輸出的結(jié)果
#include
using namespace std;
class base
{
public:
void func(const char str){cout << "base: " << str << endl;}
virtual void func(int num){cout << "base: " << num << endl;}
};
class derived : public base
{
public:
void func(const char str){cout << "derived: " << str << endl;}
void func(int num){cout << "derived: " << num << endl;}
void func(){cout << "the function is in derived!" << endl;}
};
int main()
{
base pb;
derived objd;
pb = objd;
pb->func(11);
pb->func("hello");
// pb->func();
getchar();
return 0;
}
