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【多选题】
AT89C51的片内数据存储器有( )A.
工作寄存器组
B.
特殊功能寄存器
C.
位寻址区
D.
程序存储器
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举一反三
【单选题】Which of the following best describes the organization of the last paragraph of the passage?
A.
New evidence is introduced to support a traditional point of view.
B.
Three explanations for a phenomenon are presented, and each is disputed by means of specific information.
C.
Three hypotheses are outlined, and evidence supporting each is given.
D.
Recent discoveries are described, and their implications for future study are projected
【多选题】下列关于《中国药典》（2015年版）“制剂通则”注射剂的规定说法正确的是：
A.
溶液型注射液应澄清
B.
乳状液型注射液不得有相分离现象
C.
注射剂还应符合正文品种项下的形状描述
D.
注射剂可分为注射液、注射用无菌粉末及注射用浓溶液
E.
除另有规定外，混悬型注射液中，原料药物的粒径应小于15μm
【单选题】桑寄生的功效为
A.
祛风湿，补肝肾，强筋骨，固精
B.
祛风湿，补肝肾，强筋骨，缩尿
C.
祛风湿，补肝肾，强筋骨，安胎
D.
祛风湿，补肝肾，强筋骨，止泻
E.
祛风湿，补肝肾，强筋骨，纳气平喘
【单选题】Which of the following statements about snakehead fish is NOT true according to the passage?
A.
It has a strong life force.
B.
It can threaten some freshwater species.
C.
Some people make a living by breeding it.
D.
It has been found in a pond of Maryland.
【单选题】Which of the following statements is correct on the basis of the information in the passage?
A.
Federal law requires prospective car buyers to do comparison shopping.
B.
Consumer magazines devote more than half their pages to practical advice about cars.
C.
A subscription to an automobile enthusiasts' magazine is required of prospective car buyers.
D.
Federal law requires that specific car performance information be made available to all purchasers.
【简答题】Which of the following is the best solution to the problems mentioned in the passage? A) The designing of highly efficient car engines. B) A reduction of vehicle use in cities. C) The development of e...
【单选题】Which of the following methods of solving the water problem is NOT mentioned in the passage?
A.
Recycling wastewater.
B.
Dry cleaning.
C.
Cutting down the amount of water used.
D.
Using treated sea water.
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