Questions 11 to 18 are based on the conversation you have just heard.
A. The two persons are talking about a lost wallet.
B. The woman is asking the way.
C. The man is not from around here.
D. The man is showing the woman around.
查看答案
1.001的203%等于多少()
A. 2.00202
B. 2.00300
C. 2.03203
D. 2.03300
半乳糖的简写为()
A. Glu
B. Rha
C. Ara
D. Gal
E. Xyl
非铠装电缆用于非电气人员经常活动场所的地坪以上1m范围以及地中引出的地坪下0.3m深电缆区段时,应采用具有机械强度的管或罩加以保护。( )
A. 对
B. 错
区别5,8-二羟基蒽醌与5,6-二羟基蒽醌时选用()
A. 碱液反应
B. 醋酸镁反应
C. 无色亚甲蓝试验
D. α-萘酚-浓硫酸试验
E. 浓硫酸反应