当清洗柴油机呼吸器时，取出滤芯后应将呼吸器进口处用盖子盖好，避免（）。A.灰尘、污物

糖尿病患者容易出现[ ]

A．细胞内液增多

B．组织液增多

C．体液增多

D．尿量增多

胸腺依赖抗原是指（）。

麻黄加术汤证与麻杏苡甘汤证有何异同

When a disease of epidemic proportions threatens the public, scientists immediately get to work, trying to locate the source of affliction and find ways to combat. Vaccination is one of the effective ways to protect the (1) population of a region or country which may be (2) grave risk. The process of vaccination allows the patient’s body to (3) immunity to the virus or disease so that, if it is encountered, one can fight it (4) naturally. To accomplish this, a small weak or dead (5) of the disease is actually injected into the patient in a controlled environment, (6) his body’s immune system can learn to fight the invader (7) . Information (8) how to penetrate the disease’s defenses is (9) to all elements of the patient’s immune system in a process that occurs naturally, in which genetic information is passed from cell to cell. This makes sure that (10) the patient later come into contact with the real problem, his body is well equipped and trained to (11) with it, having already done so before.

There are, however, dangers (12) in the process. (13) , even the weakened version of the disease contained in the vaccine proves (14) much for the body to handle, resulting in the immune system (15) , and, therefore, the patient’s death. Such is the case of the smallpox vaccine, (16) to eradicate the smallpox epidemic that nearly (17) the whole Native American population and killed massive numbers of settlers. (18) 1 in 10,000 people who receive the vaccine (19) the smallpox disease from the vaccine itself and dies from it. Consequently, the process, which is truly a (20) , may indeed hide some hidden curses.

1（）

A.entire

B.total

C.complete

D.complex

电力器材应符合现行国家标准，无国家标准时，应符合现行行业标准，无正式标准的新型器材，须经有关部门鉴定合格后方可采用。