薄层色谱检识黄酮类化合物时，常用显色试剂有A.2%Z氯化铝甲醇液  B.2%Z氯化铁

未经注册的饲养场饲养的活禽可以供港澳。（）

Directions: Complete the following passage by filling in each blank with one word that best fits the context.

Job hunting has always been a headache for college graduates. Though many graduates are employed right after graduation, some are   48 . Most serious of all, some still have no idea  49    to go working even a long time after graduation.

The reasons   50  this phenomenon are various. On the one hand, a few years ago colleges and universities enrolled so many students in popular majors, such as economy, finance and so on   51    the number of graduates is greater than the need in the market. On the other hand, most graduates would rather stay in large cities without suitable jobs to do   52  go to the country.

I believe the problem can be solved   53  both colleges and students take measures. First, they should research the market and develop special skills to suit   54  needs. Second, students’ attitude towards employment should be changed. They should go to some   55  cities and the countryside. There they can also give full play to their professional knowledge. In a word, if we pay much attention, the problem can be solved.

下列关于抵押物转让的说法，错误的是（）。

A.在抵押期间，抵押人转让已办理抵押登记的抵押物的，若未告知受让人转让物已经抵押，则转让行为无效

B.在抵押期间，抵押人转让已办理抵押登记的抵押物的，若未通知银行，则转让行为无效

C.抵押权应与其担保的债权分离而单独转让

D.抵押人转让抵押物所得的价款，应向银行提前清偿所担保的债权

在药物诊疗中，临床医生应遵循的道德要求，不包括的是（）

A.对症下药、剂量适宜

B.根据患者的病情选择药物

C.合理配伍，预防药源性疾病

D.节约费用

E.密切协作

粗酚全馏份精馏时首先采出的产品是（）。

A.二甲酚

B.三混甲酚

C.工业酚