_______, also called womb, an inverted pear-shaped muscular organ of the female reproductive system, located between the bladder and the rectum.
A. Cervix
B. Uterus
C. Prostate
D. Vagina
以下哪些会导致人体阴阳失和()
A. 过食寒性食物
B. 生活没规律
C. 心情不愉快
D. 适当运动
海上卫星通信主要使用_____系统.
A. VHF
B. HF
C. MF
D. INMARSAT
与十进制数87和25.7等值的二进制数(要求二进制数保留小数点以后4位有效数字)分别为()。
A. 1100111和11001.1101
B. 1010111和11001.1101
C. 1100111和11001.1011
D. 1010111和11001.1011