预防甲亢患者甲状腺大部分切除术后出现甲状腺危象最重要的是

A．充分做好术前准备

B．防止损伤甲状旁腺

C．尽量多地保留甲状腺

D．保证残余甲状腺的血压供应

E．手术中尽量少地挤压甲状腺

[说明] 打印输出10行杨晖三角形。形式如下：
杨晖三角形：
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1
1 9 36 84 126 126 84 36 9 1
class yanghui

public static void main (String args [] )

int i, j;
(1)
int yanghui [] [];
System. out. println( “杨晖三角形：” );
yanghui = new int [ yhleve1] [];
for(i =0;i ＜ yanghui, length; i + + )
yanghui[i] = new int [i + 1];
(2)
for( (3) )

yanghui [i] [0] = 1;
for(j = 1 ;j ＜ yanghui[i], length - 1 ;j + + )
yanghui[i] [j] = yanghui[i - 1] [j - 1] + yanghui[i - 1] [j];
yanghui[i] [yanghui[i]. length - 1 ] = 1;

for ( i=0; i ＜ yanghui. length; i + + )

for(j =0;j ＜ yanghui[i]. length; j + + )
(4)
System. out. println( );