三角形的周长为10，有一条边长为4，则它的面积的最大值为（）。
A.A
B.B
C.C
D.D
E.E
参考答案：E
解析：
利用13题的结论．
00XFFG-78017KB
DALIAN CHINA DELIVERY OF CIF DALIAN CHINA OF 3 UNIIS & 6 P’KGS OF
B30S FORKLIFT TRUCK INCLUDING FFT4730MM S/S BATTERY & CHARGER
H. S. CODE, 84271090
DETAILS AS PER THE ATTACHED SHEET
MANUFACTURER: CEERLOFS TRUCK B. V. GERMANY
CONTRACT No.: 00XFFFG-7801KR
B30S-2 17951.00 53853.00
FREIGHT CHARGES 2050.00
INSURANCE 1346.00
TOTAL 57249.00
DADAI CORPORATION DADAI CORPORATION
P. O. BOX, 7955 SEOUL, KOREA
TELEPHONE, SIGNED BY ______
请根据以上资料，选择以下栏目的正确选项：
“提运单号”栏应填（）。
A．EEW7865435
B．CDFG5618
C．LC810A000228
D．00XFFFG78017KR
等离子弧焊与切割如何放电击？
00XFFG-78017KB