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【简答题】
（1）玻璃棒是中学化学实验中常用的仪器．下列实验过程中，一般不需要用玻璃棒的是______（填写编号） ①用pH试纸测定Na 2 CO 3 溶液的 pH ②配制一定物质的量浓度的氯化钠溶液 ③将适量氯化铁饱和溶液滴入沸水中制备氢氧化铁胶体 ④探究Ba（OH） 2 ?8H 2 O 晶体的NH 4 Cl 晶体反应过程中的能量变化 ⑤实验室用新制的FeSO 4 溶液和预处理过的NaOH 溶液制备Fe（OH） 2 白色沉淀 （2）用“大于”、“小于”、或“等于”填空： ①读取量筒中液体体积时，视线偏高，读取的体积数______实际体积数 ②用托盘天平称取10.4g食盐，将砝码和食盐的位置颠倒，所称取食盐的质量______10.4g． ③配制500mL0.1mol?L -1 NaOH 溶液，俯视刻度线，所得溶液的物质的量浓度______0.1mol?L -1 ④用中和滴定测某NaOH 溶液的浓度，量取待测液时末用该溶液润洗滴定管，测得的溶液浓度______实际浓度．
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参考答案：
举一反三
【单选题】大型机被当做主机,许多终端用户共享主机的CPU和储存资源的模式,称为( )模式。
A.
B/S
B.
单主机
C.
C/S
D.
混合
查看完整题目与答案
【简答题】[ A] joined [ B] attached [ C] connected [ D] fastened
查看完整题目与答案
【单选题】【C3】
A.
joined
B.
attached
C.
connected
D.
fastened
查看完整题目与答案
【简答题】A.combined B.compared C.connected D.fastened
查看完整题目与答案
【判断题】顺向负迁移的典型例证是倒摄抑制。
A.
正确
B.
错误
查看完整题目与答案
【简答题】18 按照骨骼的形状分类,下颌骨属于_______________
查看完整题目与答案
【单选题】How were the blocks fastened?
A.
The blocks were fastened with concrete.
B.
The blocks were fastened by using an old method
C.
The blocks were fastened by nails.
D.
The blocks were not fastened very tightly.
查看完整题目与答案
【多选题】What if the passenger seems not to securely fastened the seat belt before landing?
A.
Please release your seatbelt.
B.
Please make sure that your seatbelt is securely fastened.
C.
Slip the belt into the buckle and pull tight.
D.
Please remain your seatbelts fastened.
查看完整题目与答案
【单选题】Next to the hole ______, ______ a bell was fastened.
A.
a nail was there to that
B.
was a nail to which
C.
was a nail to that
D.
a nail was there from which
查看完整题目与答案
【多选题】What if the passenger seems not to securely fastened the seat belt before landing?
A.
Please release your seatbelt.
B.
Please make sure that your seatbelt is securely fastened.
C.
Slip the belt into the buckle and pull tight.
D.
Please remain your seatbelt fastened.
查看完整题目与答案
相关题目：
【单选题】大型机被当做主机,许多终端用户共享主机的CPU和储存资源的模式,称为( )模式。
A.
B/S
B.
单主机
C.
C/S
D.
混合
查看完整题目与答案
【简答题】[ A] joined [ B] attached [ C] connected [ D] fastened
查看完整题目与答案
【单选题】【C3】
A.
joined
B.
attached
C.
connected
D.
fastened
查看完整题目与答案
【简答题】A.combined B.compared C.connected D.fastened
查看完整题目与答案
【判断题】顺向负迁移的典型例证是倒摄抑制。
A.
正确
B.
错误
查看完整题目与答案
【简答题】18 按照骨骼的形状分类,下颌骨属于_______________
查看完整题目与答案
【单选题】How were the blocks fastened?
A.
The blocks were fastened with concrete.
B.
The blocks were fastened by using an old method
C.
The blocks were fastened by nails.
D.
The blocks were not fastened very tightly.
查看完整题目与答案
【多选题】What if the passenger seems not to securely fastened the seat belt before landing?
A.
Please release your seatbelt.
B.
Please make sure that your seatbelt is securely fastened.
C.
Slip the belt into the buckle and pull tight.
D.
Please remain your seatbelts fastened.
查看完整题目与答案
【单选题】Next to the hole ______, ______ a bell was fastened.
A.
a nail was there to that
B.
was a nail to which
C.
was a nail to that
D.
a nail was there from which
查看完整题目与答案
【多选题】What if the passenger seems not to securely fastened the seat belt before landing?
A.
Please release your seatbelt.
B.
Please make sure that your seatbelt is securely fastened.
C.
Slip the belt into the buckle and pull tight.
D.
Please remain your seatbelt fastened.
查看完整题目与答案
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