Now this businessman seems to be unable to pay()the money borrowed from the bank.
A. in
B. for
C. off
D. out
As it turned out to be a small house party, we ________ so formally.
A. needn't dress up
B. did not have dressed up
C. did not need dress up
D. needn't have dressed up
对网络的威胁包括_______。 Ⅰ.假冒 Ⅱ.特洛伊木马 Ⅲ旁路控制 Ⅳ.陷门 Ⅴ.授权侵犯 在这些威胁中,属于渗入威胁的是_______。
A. Ⅰ、Ⅲ和Ⅴ
B. Ⅲ和Ⅳ
C. Ⅱ和Ⅳ
D. Ⅰ、Ⅱ、Ⅲ和Ⅳ
利血平的鉴别反应
A. 盐酸普鲁卡因
B. 对乙酰氨基酚
C. 硅胶GF254
D. 黄色希夫碱溶液
E. 对氨基水杨酸钠