【判断题】焊条电弧焊焊接低碳钢或低合金钢时,电弧中心部分的温度可达6000℃~13000℃。
【单选题】Which is the wrong description of the central lymphoid organs?
A.
Including the thymus and bone marrow
B.
developed earlier than peripheral lymphoid organs
C.
lymphocyte proliferation don't need antigen stimulating
D.
B lymphocyte and T lymphocyte develop respectively from thymus and bone marrow
E.
Not directly involved in the body's immune response
【多选题】Secondary lymphoid organs include ( )
C.
the mucosa-associated lymphoid tissue (MALT)
【单选题】The lighter-staining centre of a lymphoid follicle is known as:
【单选题】不能直接用显微镜计数法测定的微生物群体数目的是
【单选题】华中数控车系统中G76是( )指令(华中系统)。
【单选题】Which is wrong with the description of lymphoid nodule?
A.
Another name is lymphoid follicle
C.
Spherical or ellipsoidal
D.
Mainly involved in cell immune response
E.
have significant germinal center
【单选题】华中数控系统中,螺纹车削采用斜进法进刀的指令是().
【单选题】不能直接用显微镜计数法测定的微生物群体数目的是()
【单选题】Which of the following is a primary lymphoid organ?