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【简答题】
在下列结论中,正确的结论是(  ) ①“p∧q”为“p∨q”为真的充分不必要条件; ②“p∧q”为假是“p∨q”为真的充分不必要条件; ③“p∨q”为“?p”为假的必要不充分条件; ④“?p”为“p∧q”为假的必要不充分条件. A.①② B.①③ C.②④ D.③④
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皮皮学刷刷变学霸
举一反三
【简答题】由于网络营销的( ) ,使其真正实现了全程营销。A. 成长性 B. 双向互动性 C. 技术性 D. 跨时空性
【单选题】通常当变压器负荷率不大于85%时,其无功功率损耗可概略估算为______kvar。
A.
ΔQT≈(0.25~0.3)Sjs
B.
ΔQT≈(0.2~0.25)Sjs
C.
ΔQT≈(0.15~0.2)Sjs
D.
ΔQT≈(0.05~0.08)Sjs
【单选题】土壤具有()是土壤最本质的特征
A.
肥力
B.
有机质
C.
矿物质
D.
水分
【单选题】通常当变压器负荷率不大于85%时,其无功功率损耗可概略估算为( )。
A.
△QT≈(0.25~0.3)Sjs(kvat)
B.
△QT≈(0.2~0.25)Sjs(kvar)
C.
△QT≈(0.15~0.2)Sjs(kvar)
D.
△QT≈(0.05~0.08)Sjs(kvar)
【单选题】There are many tasks for me______today.
A.
to do
B.
doing
C.
to be done
D.
being done
【简答题】土壤具有( )是土壤最本质的特征 A肥力 B有机质 C矿物质 D水分
【单选题】由于网络营销的双向互动性,使其真正实现了
A.
买方市场
B.
全程营销
C.
卖方市场
D.
营销整合
【单选题】There are many different kinds of tasks for students to do while they are listening to a passage. Which of the following is NOT while-listening activities?
A.
Listen and sequence.
B.
Listen and draw.
C.
Listening for specific information
D.
No specific responses.
【单选题】There are many different kinds of tasks for students to do while they are listening to a passage. Which of the following is NOT while-listening activities?
A.
Listen and sequence.
B.
Listen and draw.
C.
Listening for specific information
D.
Listen and take notes
【简答题】土壤具有______是土壤不同于其他自然物质最本质的特征。
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