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【单选题】
坝基渗水压力测压管应沿渗流方向布置,每排不少于( )根A.
2
B.
3
C.
5
D.
8
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举一反三
【单选题】院前急救中，早期电除颤要求在下列哪项时限内完成（）
A.
患者发病后5分钟内
B.
目击者发现患者5分钟内
C.
急救医师到达现场5分钟内
D.
接到求救后5分钟内
E.
急救医师到达现场10分钟内
【单选题】下列各组物质中既有离子键又有共价键的是
A.
KOH、H 2 SO 4 、NH 4 Cl
B.
CaO、Na 2 CO 3 、NH 4 HCO 3
C.
K 2 O 2 、NaOH、K 2 SO 4
D.
HclO、Al 2 O 3 、MgCl 2
【单选题】Seventy percent of the students _____ taken part in the work and seventy percent of the work _____been finished. [ ]
A.
has, has
B.
had , had
C.
has, have
D.
have, has
【单选题】Which of the following is NOT true?
A.
Seventy million people have an eating disorder in the world．
B.
More than 1／2 0f the women and 2／3 0f the men in Britain have weight problem．
C.
More than 1／4 0f adults and 1／5 0f children in USA weigh too much．
D.
Clothing factories and magazines showed images of women of all shape．
【单选题】听力原文：M: You must have been driving at seventy miles an hour. Didn' t you see the speed limit? W: I can' t have been driving that fast. M: I was doing eighty when I overtook you. What were they talking...
A.
The driving speed of the woman.
B.
How fast they should drive.
C.
The speed limit.
D.
The driving speed of the man.
【单选题】配合回归直线方程对资料的要求是( )
A.
因变量是给定的数值,自变量是随机的
B.
自变量和因变量都是随机的
C.
自变量是给定的数值,因变量是随机的
D.
自变量和因变量都不是随机的
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