起于小叶内,与分泌管相延续,开口于口腔,并与口腔黏膜上皮融合的唾液腺导管是()
A.混合性腺泡
B.排泄管
C.肌上皮细胞
D.闰管
E.分泌管
参考答案:B
面对网购火爆和消费投诉猛增的态势,专家呼吁强推“商家无理由退货”制度。这要求商家 [ ]
①行为前预见与选择
②不求报酬地去销售
③行为中自律与自控
④行为后自省与负责
A.①②③
B.①②④
C.①③④
D.②③④
According to the last paragraph, if changes are called for, some manufactures are more willing to change ______.
A.the image of a product
B.the function of a product
C.the quality of a product
D.the price of a product