Jenny _________ eat eggs tomorrow. [ ]
A. am going to
B. is going to
C. be going to
答案:B
早期轻症结核病宜选用的药物是()
A.利福平
B.链霉素
C.异烟肼
D.庆大霉素
E.对氨基水杨酸
齿轮一般用主视图和左视图(或局部视图)两个视图表达