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【简答题】
Can we live without salt (盐)? No , salt is very important to us . We need salt in our food . Animals need it , too . Most of the salt in our country comes from the sea water . People dig very big pools (池塘) and let sea water in . When the sun dries up (晒干) the water , people can get salt from the ground . The salt is white , clean and beautiful . There are a lot of salt wells (井) in Sichuan . A salt well is much like a water well . People bring the well water up to the ground and then dry it in big jars (罐子, 坛子) over fire . In this way they get salt . We can also get salt from salt mines (矿) . A salt mine may be found under the ground (盐矿石 可能会在地下被找到) . Some years ago , people in Jiangxi found a big salt mine and soon opened it . People there need salt from other places no more . In the northwest of our country , there are many salt lakes . Some of these lakes are very big . The salt in a big lake will be enough for our people for centuries (世纪) 。 1 . We can't live without salt , so ____________ . 2 . We get most of the salt from ____________ . 3 . People in Sichuan get salt from ____________ . 4 . Some years ago , People ____ found a big salt mine and soon opened it . 5 . In ____ of China , there are many big salt lakes .
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【简答题】计算:a 2 ·a 3 ÷a 4 的结果是(    )。
【多选题】在应付款系统中,删除凭证的前提条件是( )
A.
未在总账中记账
B.
未核销
C.
未经出纳签字
D.
未审核
【单选题】计算x n+1 ·x n-1 ÷(x n ) 2 (x≠0)的结果是 [     ]
A.
-1
B.
1
C.
0
D.
6
【判断题】在国际海上集装箱货物中,冷藏货物装箱期间,承运人无需负责保持冷藏装置的正常云状,以达到装载冷藏货所需求的温度。
A.
正确
B.
错误
【单选题】计算1÷ ·(m 2 -1)的结果是 [     ]
A.
-m 2 -2m-1
B.
-m 2 +2m-1
C.
m 2 -2m-1
D.
m 2 -1
【单选题】羧甲基淀粉钠一般可作片剂的哪类辅料
A.
填充剂
B.
崩解剂
C.
粘合剂
D.
抗粘着剂
E.
润滑剂
【多选题】在应付款系统中,删除凭证的前提条件是()
A.
未核销
B.
未审核
C.
未经出纳签字
D.
未在总账中记账
【单选题】题目 下列哪种存储格式不支持Alpha通道( )
A.
A TIFF
B.
B PSD
C.
C DCS 2.0
D.
D JPEG
【单选题】[2019·金华]计算a 6 ÷a 3 ,正确的结果是( )
A.
2
B.
3a
C.
a 2
D.
a 3
【单选题】计算a 4 ·a 3 ÷a 2 的结果是 [     ]
A.
a 3
B.
a 4
C.
a 5
D.
a 6
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