已知(BX)=2，(CX)=2，执行LOOPNEXT指令后，BX、CX值为（） A: (BX)=2，(CX)=1 B: (BX)=2，(CX)=2 C: (BX)=1，(CX)=1 D: (BX)=1，(CX)=2

The peripheral immune organs include A: Lymph node,Spleen, and Bone marrow B: Thymus, Spleen, and MALT C: Bursa of Fabricius,Spleen,and Tonsil D: Spleen, Lymph node, and MALT E: Appendix, Bone marrow, and Lymph node

Which organs are central immune organs? A: Spleen B: Lymph nodes C: Lymph tissue D: Thymus E: Bone marrow

Peripheral immune organs include spleen and lymph nodes.

方程\(\left( {1 - {x^2}} \right)y - xy' = 0\)的通解是（ ）。 A: \(y = C\sqrt {1 - {x^2}} \) B: \(y = - {1 \over 2}{x^3} + Cx\) C: \(y = {C \over {\sqrt {1 - {x^2}} }}\) D: \(y = Cx{e^{ - {1 \over 2}{x^2}}}\)

将CX寄存器低4位清零的正确指令是（）。 A: AND CX，0F0H B: AND CX，0FFF0H C: AND CX，1110H D: MOV CX，0

Peripheral immune organs include spleen and lymph nodes. A: 正确 B: 错误

执行以下指令后一定能使AX的值为0的是 。 A: MOV AX,1234HMOV CX,0000HXCHG AX,CX B: MOV AX,1234HMOV CX,0000HPUSH AXPOP CX C: MOV AX,1234HMOV CX,0000HMOV CX,AX D: MOV AX,0000HMOV CX,1234HMOV AX,CX

17.将CX寄存器低4位清零,其它位不变，正确指令是( )。 A: AND CX，0F0H B: AND CX，0FFF0H C: AND CX，1110H D: MOV CX，0

已知：AX=45A0H,BX=1201H,CX=FF00HADD AX, BXSUB CX, AX ;CX=______