皮皮学，免费搜题
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【单选题】
A 43-year-old woman has become increasingly tired and listless over the past 5 months. She has had menometrorrhagia for the past 3 months. On physical examination, there are no remarkable findings except for a positive result on stool guaiac testing. Laboratory studies show hemoglobin, 9.2 g/dL; hematocrit, 27.3%; and MCV, 75 μm3. Pelvic ultrasound reveals an enlarged uterus. A Pap smear shows abnormal cells of probable endometrial origin. Colonoscopy is performed, followed by partial colectomy; the gross appearance of the lesion is shown in the figure. Which of the following molecular abnormalities has most likely led to these findings?A.
Mutation in a DNA mismatch-repair gene
B.
Germline inheritance of APC gene mutation
C.
Tyrosine kinase activation owing to c-KIT mutation
D.
Homozygous loss of PTEN gene
E.
Inactivation of the Rb protein by HPV-16
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皮皮学刷刷变学霸
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【判断题】互联网服务供应商(Internet Service Provider,简称ISP), 又称因特网服务提供者、互联网服务提供商、网络服务供应商,即指提供互联网存取服务的公司。通常大型的电讯公司都会兼任互联网服务供应商。
A.
正确
B.
错误
【单选题】下列语句执行后,ch1的值是( )。 char ch1='A',ch2='W'; if(ch1+2
A.
'A'
B.
'B'
C.
'C'
D.
B
【单选题】女教师穿正装时要搭配船式皮鞋,前不露脚尖,后不露脚跟,没有图案、装饰,下列不符合鞋跟高度要求的是( )。
A.
2 厘米
B.
2.5 厘米
C.
3cm
D.
3.5 cm