试管中盛有白色晶体,检验它是否是铵盐的方法中不可行的是[ ] A.加热,将湿润的

题型:选择题

问题:

试管中盛有白色晶体,检验它是否是铵盐的方法中不可行的是[ ]

A.加热,将湿润的红色石蕊试纸放在管口

B.加氢氧化钠溶液,加热,将湿润的酚酞试纸放在管口

C.加氢氧化钠溶液,加热,将蘸有浓盐酸的玻璃棒放在试管口

D.加氢氧化钠溶液,加热,将湿润的红色石蕊试纸放在管口

考点:铵盐
题型:选择题

SEOUL, April 16 (Xinhua) -- A passenger ship with 471 people on it, mostly high school students, was sinking(沉没) in waters off South Korea's southwest coast(海岸). The 6,825-ton passenger ship named "SEWOL" was sinking in waters off the Jindo Island, just off South Korea's southwest corner, sending out a danger signal at around 8:55 a.m. local(当地的) time on Wednesday. The ship careened(倾斜) around 60°to the port.

Among the 471 people on the ship, there were together 190 people saved by 10:20 a.m. local time.

After the report, the South Korean sent seven ships and a helicopter(直升机) to the sea for help. The ship left South Korea's eastern port city of Incheon for the country's southern Jeju Island.

小题1:What is the name of the ship?

A. SEOUL.              B. SEWOL.                C. Incheon.

小题2:How many people were on that ship?

A. 281.              B. 190.                C. 471.

小题3:Where did that ship sink?

A. In waters off South Korea's southeast coast

B. In waters off the Jindo Island,

C. In waters off the Jeju Island,

小题4:What time did the ship send out a danger signal?

A. At around 8:55 a.m. Beijing time.

B. At around 10:20 a.m. local time

C. At around 8:55 a.m. local time.

小题5:Which is TRUE according to the report?

A. 281 people were saved.

B. The South Korean only sent a helicopter for help.

C. Most of the people on the ship are students in high school.

题型:选择题

孕妇,于妊娠早期因先兆流产服用人工合成的孕激素保胎治疗。

孕妇子女会有哪些临床表现()

A.随婴儿长大,男性化日益明显

B.胎儿出生后男性化不再加剧,至青春期月经来潮

C.无正常生育能力

D.血雄激素增高

E.尿17-酮升高

题型:选择题

心身疾病是()

A.心理社会因素引起的躯体疾病

B.心理社会因素引起的精神疾病

C.心理社会因素引起的神经症

D.心理社会因素引起的生理反应

E.心理社会因素引起的器官系统功能性反应

题型:选择题

下列说法正确的是()

A.药品包装必须印有或贴有标签并附有说明书

B.开办药品经营企业必须遵循合理布局和方便群众购药的原则

C.药品生产企业可以接受委托生产药品

D.除未实施批准文号管理的中药材,药品生产企业、药品经营企业、医疗机构必须从具有药品生产、经营资格的企业购进药品

E.国务院药品监督管理部门规定的生物制品、首次在中国销售的药品在销售或进口时需由指定药检机构检验

题型:选择题

在正常工作条件下能够承受线路导线的垂直和水平荷载,但不能承受线路方向导线张力的电杆叫()杆。

A.耐张;

B.直线;

C.转角;

D.分支。

更多题库