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【简答题】
考点 20 平面向量的相关概念 1. 向量的定义 既有 _________ 又有 _________ 的量叫做向量 . 向量可以用 _________ 表示,如图所示向量 ,方向是由 _________ 指向 _________. 向 量也可以用小写黑体字母表示,如向量 a , b . 向量的 _________ 叫做 向量的模, 的模记作 _________. 2. 零向量: ____________ 的向量叫做零向量,记作 0 , 0 的方向 _________. 单位向量: _______________ 的向量叫做单位向量 . 与非零向量 a 同 向的单位向量为 _________. 3. 平行向量 方向 _________ 或 _________ 的 _________ 向量,称为平行向量或 _________. 平行向量都可以平移到同一条直线上 . 零向量与 任意向量共线 . 4. 相等向量: ________________ 的向量叫 做相等向量; 相反向量: _________________ 的向量叫做相反向量 .
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【简答题】阅读理解 High school is tough. And if you were to ask Pink her opinion on the subject she'd tell you the same. Before she became famous, and when she was still called Alicia Moore, the young superstar fac...
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【简答题】Old Dawson had the best apples in town, but kids knew they mustn't go into his yard to pick a delicious apple, even off the ground, because Dawson, a bad-tempered( 坏脾气的 ) man, they said, would come af...
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【单选题】She'd like ______ with you. She wants some help.
A.
to tell
B.
to say
C.
to talk
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【单选题】急性呼吸性碱中毒的血气参数变化是
A.
PaCO2降低，BB增高
B.
PaCO2降低，AB=SB
C.
PaCO2降低，BE负值减少
D.
PaCO2降低，AB
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【简答题】( )模块传送的数据流叫做逻辑输出数据流。
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【单选题】- Can I pay the bill by check? -- Sorry, sir. But it is the management rules of our hotel that payment ______ be made in cash.
A.
can
B.
shall
C.
will
D.
may
查看完整题目与答案
【单选题】急性呼吸性碱中毒的血气参数变化是
A.
PaCO2降低，AB=SB
B.
PaCO2降低，BB增高
C.
PaCO2降低，AB
D.
PaCO2降低，AB>SB
查看完整题目与答案
【单选题】在电装公司ECD-V1型电子控制分配泵系统中,ECU控制油量调节换套的最大位移量约为:
A.
2 mm
B.
10 mm
C.
20 mm
查看完整题目与答案
【单选题】急性呼吸性碱中毒的血气参数变化是
A.
PaCO 2 降低,BB增高
B.
PaCO 2 降低,AB=SB
C.
PaCO 2 降低,BE负值减少
D.
PaCO 2 降低,AB
E.
PaCO 2 降低,AB>SB
查看完整题目与答案
【单选题】— Could I have the small table by the window? — Sorry, sir. It ______ in advance.
A.
booked
B.
will be booked
C.
had booked
D.
has been booked
查看完整题目与答案
相关题目：
【简答题】阅读理解 High school is tough. And if you were to ask Pink her opinion on the subject she'd tell you the same. Before she became famous, and when she was still called Alicia Moore, the young superstar fac...
查看完整题目与答案
【简答题】Old Dawson had the best apples in town, but kids knew they mustn't go into his yard to pick a delicious apple, even off the ground, because Dawson, a bad-tempered( 坏脾气的 ) man, they said, would come af...
查看完整题目与答案
【单选题】She'd like ______ with you. She wants some help.
A.
to tell
B.
to say
C.
to talk
查看完整题目与答案
【单选题】急性呼吸性碱中毒的血气参数变化是
A.
PaCO2降低，BB增高
B.
PaCO2降低，AB=SB
C.
PaCO2降低，BE负值减少
D.
PaCO2降低，AB
查看完整题目与答案
【简答题】( )模块传送的数据流叫做逻辑输出数据流。
查看完整题目与答案
【单选题】- Can I pay the bill by check? -- Sorry, sir. But it is the management rules of our hotel that payment ______ be made in cash.
A.
can
B.
shall
C.
will
D.
may
查看完整题目与答案
【单选题】急性呼吸性碱中毒的血气参数变化是
A.
PaCO2降低，AB=SB
B.
PaCO2降低，BB增高
C.
PaCO2降低，AB
D.
PaCO2降低，AB>SB
查看完整题目与答案
【单选题】在电装公司ECD-V1型电子控制分配泵系统中,ECU控制油量调节换套的最大位移量约为:
A.
2 mm
B.
10 mm
C.
20 mm
查看完整题目与答案
【单选题】急性呼吸性碱中毒的血气参数变化是
A.
PaCO 2 降低,BB增高
B.
PaCO 2 降低,AB=SB
C.
PaCO 2 降低,BE负值减少
D.
PaCO 2 降低,AB
E.
PaCO 2 降低,AB>SB
查看完整题目与答案
【单选题】— Could I have the small table by the window? — Sorry, sir. It ______ in advance.
A.
booked
B.
will be booked
C.
had booked
D.
has been booked
查看完整题目与答案
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