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【简答题】
称取Na2CO3=NaHCO3混合物试样0.3380g,以甲基橙为指示剂,用0.1500mol.L—1HCl标准溶液滴定,耗去35.00mL,若以酚酞为指示剂滴定时,将耗去HCl多少毫升?混合试样中各自的含量为多少?
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举一反三
【单选题】关于我国文化,下列说法不正确的是______。
A.
我国宋代豪放派词人的代表是苏轼和辛弃疾
B.
五代时期的董源被认为是南派山水画的开创者
C.
我国“折柳送行”的习俗最早见于《诗经》里的《小雅·采薇》,寓含“陆别怀远”之意
D.
《金匮要略》是医学家陶弘景的著作
【单选题】There are many on the mountain.
A.
apple tree
B.
apples trees
C.
apple trees
【简答题】曲线 在区间 内是凸的,在区间 内是凹的,拐点的坐标为 。
【单选题】I can see _______ apple tree behind the house. There are many apples _______ it. [     ]
A.
an; in
B.
a; on
C.
a; in
D.
an; on
【单选题】There are many ____ on the mountain.
A.
apple tree
B.
apples trees
C.
apples tree
D.
apple trees
【单选题】There are some monkeys ____an apple tree _____ which there are many apples.
A.
on; on
B.
in; on
C.
at; on
D.
on; in
【单选题】There are many apples___the tree. A bird___the tree is picking an apple.
A.
in;on
B.
on;in
C.
in;at
D.
to;of
【单选题】There are many on the mountain. A. apple tree B. apples trees C. apples tree D. apple trees
A.
A
B.
b
C.
c
D.
d
【单选题】大量不保留灌肠的注意事项中描述错误的是()
A.
伤寒患者灌肠液量不得超过500ml
B.
急腹症、消化道出血等患者禁忌灌肠
C.
肝昏迷患者可用肥皂水灌肠
D.
中暑患者灌肠时可用4℃生理盐水
E.
心力衰竭患者禁用生理盐水灌肠
【简答题】阅读理解。 A poor man has an apple tree in his garden. There are many nice apples on it. He finds one of the apples much bigger than the others. It is as big as a ball. The poor man takes the apple to the ...
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