皮皮学，免费搜题
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【单选题】
下列哪一种产品同时具有消费的非排他性和非竞争性？（ ）A.
地铁
B.
“和谐号”动车
C.
环境保护
D.
高等教育
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】如图所示的电桥电路中已知电阻 R1 , R2 和 R3 中的电流分别为 25mA,15mA 和 10mA, 方向如图中所示,那么额电阻 R4 , R5 和 R6 中的电流分别为 mA 、 mA 、 mA 。
【多选题】下列关于科目汇总表账务处理程序说法正确的有
A.
根据科目汇总表登记总账
B.
适合于经营规模大、业务量较多的大中型单位
C.
与记账凭证账务处理程序相比简化了登记总账的工作
D.
适合于经营规模小、业务量较小,记账凭证不多的单位
【单选题】Her brother be at home now, because he was seen playing basketball in the stadium just now.
A.
mustn’t
B.
needn’t
C.
can’t
D.
shouldn’t
【单选题】He must be in the building because he was seen _____ the building just now.
A.
enter
B.
to enter
C.
entering
D.
having entered
【单选题】30-year-old man had a 2-week episode of malaise, fever, and jaundice 7 years ago. On physical examination, there were needle tracks in the left antecubital fossa Sero- logic test results were positive...
A.
Serum alanine aminotransferase(ALT) level
B.
Serum alkaline phosphatase level
C.
Serum a-fetoprotein level
D.
Serum ammonia level
E.
Serum ferritin level
F.
Prothrombin time
【单选题】He must be in the building because he was seen ______ the building just now.
A.
entering
B.
enter
C.
to enter
D.
having entered
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