天麻钩藤饮治疗眩晕证时,应具备的其他主证是
A.劳累即发,面色苍白B.急躁易怒,头痛耳鸣C.腰膝酸软,遗精耳鸣D.头重如蒙,胸闷恶心E.以上都不是
参考答案:B
补全对话:根据对话内容,在空格中填写一个句子,使对话完整、正确、达意。
Jack: Hi, Kate, What are you going to do this weekend?
Kate: I'm going to Wuhan.
Jack: Wuhan? 1. ?
Kate: Because there is going to be a match between China and Russia.
Jack: How wonderful!
Kate: Would you like to go with me?
Jack: I'd like to very much. 2. ?
Kate: It's a volleyball match.
Jack: 3. ?
Kate: It will be held in Wuhan Gym.
Jack: By the way. 4. ?
Kate: Let's take the bus there tomorrow, shall we?
Jack: 5. . Good-bye!
Kate: Good-bye!
2003年10月15日,我国利用航员送入太空.中国成为继俄、美之后第三个掌握载人航天技术的国家.设该宇航员测出自己绕地球球心做匀速圆周运动的周期为T,离地面的高度为H,地球半径为R则根据T,H,R和万有引力常量G,宇航员不能计算出下面的哪一项?[ ]
A.地球的质量
B.地球的平均密度
C.飞船所需的向心力
D.飞船线速度的大小