构成胃黏膜上皮的细胞是<br/>() A: chief<br/>cell(zymogenic cell) B: parietal cell(oxyntic cell) C: mucous<br/>neck cell D: surface<br/>mucous cell E: Paneth<br/>cell
构成胃黏膜上皮的细胞是<br/>() A: chief<br/>cell(zymogenic cell) B: parietal cell(oxyntic cell) C: mucous<br/>neck cell D: surface<br/>mucous cell E: Paneth<br/>cell
Researchers have suggested that a foreign sugar molecule on a cell surface might stimulate the _________ to destroy it.
Researchers have suggested that a foreign sugar molecule on a cell surface might stimulate the _________ to destroy it.
In __________________ signaling, a cell-surface-bound signal molecule binds to a receptor protein on an adjacent cell. During embryonic development, for example, such signaling method allows adjacent cells that are initially similar to become specialized to form different cell types. A: endocrine B: contact-dependent C: paracrine D: neuronal
In __________________ signaling, a cell-surface-bound signal molecule binds to a receptor protein on an adjacent cell. During embryonic development, for example, such signaling method allows adjacent cells that are initially similar to become specialized to form different cell types. A: endocrine B: contact-dependent C: paracrine D: neuronal
The common classification of Staphylococci according to ( ) A: whether produce SPA or not B: different biochemical event and pigments C: K antigen of cell surface D: lactose fermenters
The common classification of Staphylococci according to ( ) A: whether produce SPA or not B: different biochemical event and pigments C: K antigen of cell surface D: lactose fermenters
In the thymus, thymic stromal cells(TSCs) are interconnected into a network structure. These cells carry a large number of surface molecules and can secrete a variety of thymic hormones and cytokines, which provides a suitable microenvironment for the development and maturation of thymocytes. The types of TSCs include ( ). A: epithelial cell B: macrophage C: dendritic cell D: neutrophil
In the thymus, thymic stromal cells(TSCs) are interconnected into a network structure. These cells carry a large number of surface molecules and can secrete a variety of thymic hormones and cytokines, which provides a suitable microenvironment for the development and maturation of thymocytes. The types of TSCs include ( ). A: epithelial cell B: macrophage C: dendritic cell D: neutrophil
What is NOT true about the thermal oxide layer? A: A thermal oxide layer can serve as a passivation layer. B: A thermal oxide layer acts as an insulator and forces the electrons to flow in the emitter. C: It creates a back surface field at the back side of the solar cell and thus it reduces the surface recombination velocity. D: The oxide layer can be thermally grown.
What is NOT true about the thermal oxide layer? A: A thermal oxide layer can serve as a passivation layer. B: A thermal oxide layer acts as an insulator and forces the electrons to flow in the emitter. C: It creates a back surface field at the back side of the solar cell and thus it reduces the surface recombination velocity. D: The oxide layer can be thermally grown.
______ is covered with heavy snow. A: The surface of earth B: The earth’s surface C: The earths’ surface D: The surface
______ is covered with heavy snow. A: The surface of earth B: The earth’s surface C: The earths’ surface D: The surface
_____ is covered with heavy snow. A: The earth’s surface B: The surface of earth C: The surface earth D: The earth surface
_____ is covered with heavy snow. A: The earth’s surface B: The surface of earth C: The surface earth D: The earth surface
What is the name of the solid surface in the figure below?[img=360x664]1803bb9e6fc6d99.jpg[/img] A: circular cone surface B: Cone-shaped surface C: Cylindrical surface D: Columnar surface
What is the name of the solid surface in the figure below?[img=360x664]1803bb9e6fc6d99.jpg[/img] A: circular cone surface B: Cone-shaped surface C: Cylindrical surface D: Columnar surface
For soft tooth surface gear transmission, the hardness of the tooth surface should be selected A: Pinion tooth surface hardnesslarge gear tooth surface hardness B: Pinion tooth surface hardness≤large gear tooth surface hardness
For soft tooth surface gear transmission, the hardness of the tooth surface should be selected A: Pinion tooth surface hardnesslarge gear tooth surface hardness B: Pinion tooth surface hardness≤large gear tooth surface hardness