下列关于甲型肝炎的叙述,正确的是() A.急性甲型肝炎的患者是传染源 B.血液中HA

题型:多项选择题

问题:

下列关于甲型肝炎的叙述,正确的是()

A.急性甲型肝炎的患者是传染源

B.血液中HAV主要出现于黄疸发生之前

C.慢性甲型肝炎的患者是传染源

D.无黄疸型甲型肝炎可以是传染源

E.黄疸出现之后患者血液通常无传染性

考点:医学影像住院医师传染病防治传染病防治题库
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筛分分析是利用()不同的筛子进行粒度分级测定和分析产物的粒度组成特性。

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远古时期,人们创造了许多骨伤科疗法。古代人发现在伤处抚摸、按压可减轻症状,由此产生的疗法是()

A.热熨疗法

B.按摩疗法

C.外用药物疗法

D.导引疗法

E.手术疗法

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医疗机构将其配制的制剂在市场销售的,处违法销售制剂货值金额:

A.一倍以上三倍以下的罚款

B.二倍以上三倍以下的罚款

C.三倍以上四倍以下的罚款

D.二倍以上四倍以下的罚款

E.四倍以上五倍以下的罚款

题型:多项选择题

Visitors to Britain may find the best place to sample local culture is in a traditional pub. But these friendly hostelries can be minefields of potential gaffes for the uninitiated.
An anthropologist and a team of researchers have (1) some of the arcane rituals of British pubs—starting with the (2) of getting a drink. Most pubs have no waiters—you (3) to go to the bar to buy drinks. A group of Italian youths (4) for 45 minutes before they realized they would have to (5) for their own. This may sound inconvenient, but there is a (6) purpose.
Pub culture is designed to (7) sociability in a society known for its reserve. Standing at the (8) for service allows you to chat with others (9) to be served. The bar counter is possibly the only (10) in the British Isles in which friendly conversation with (11) is considered entirely appropriate and really quite normal (12) . "If you haven’t been to a pub, you (13) been to Britain." This tip can be found in a (14) , Passport to the Pub: The Tourists’ Guide to Pub Etiquette, a (15) code of conduct for those wanting to sample "a central part of (16) life and culture". The trouble is that if you do not (17) the local rules, the experience may fall flat. For (18) , if you are in a big group, it is best if only one (19) two people go to buy the drinks. Nothing irritates the (20) customers and bar staff more than a gang of strangers blocking all access to the bar while they chat and dither about what to order.

题型:多项选择题

钻机变速箱、分动箱内有异常响声时,应()。

A.检查齿轮,如果磨损严重,要更换齿轮

B.检查轴,如果变形弯曲,要更换或校正

C.检查轴箱,有异物时要清洁润滑油,排除异物

D.检查变速箱内油量,如果过多,要减少油量

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