运输危险货物时应当配备必要的（）人员，保证危险货物处于监管之下。
A.押运
B.装卸工
C.保管员
参考答案：A
Listen to the following passage. Altogether the passage will be read to you four times. During the first reading, which will be read at normal speed, listen and try to understand the meaning. For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be read at normal speed again and during this time you should check your work. You will then be given 2 minutes to check through your work oncePlease write the whole passage on ANSWER SHEET TWO.
急性肝炎时，LDH同工酶谱中以何种增高为主（）
A.LDH1
B.LDH2
C.LDH3
D.LDH4
E.LDH5
