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【单选题】
下列关于酸式滴定管和碱式滴定管的描述，不正确的是（ ）A.
酸式滴定管又叫玻塞滴定管
B.
碱式滴定管的下部连有橡皮管，装一玻璃珠控制开关
C.
碱性滴定液宜用碱式滴定管，被滴定的物质应具有酸性
D.
通常滴定管使用之前用蒸馏水润洗3次，不能用滴定液润洗
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举一反三
【简答题】Replace the underlined part with a proper compound.The supervisor is a man who deserves everyone's trust.The supervisor is a __________________ man.
【简答题】果树正常生长结果最适土壤含水量为( )的60-80%。
【单选题】What type of cost is supervisor salary costs, where one supervisor is needed for every ten employees added to the staff?
A.
A fixed cost
B.
A variable cost
C.
A mixed cost
D.
A step cost
【单选题】What type of cost is supervisor salary costs, where one supervisor is needed for every fifteen employees added to the staff?
A.
A fixed cost
B.
A variable cost
C.
A step cost
D.
A mixed cost
【单选题】What type of cost is supervisor salary costs, where one supervisor is needed for every ten employees added to the staff?
A.
A step cost
B.
A variable cost
C.
A mixed cost
D.
A fixed cost
【单选题】what type of cost is supervisor salary costs ,where one supervisor is needed for every ten employees added to the staff?
A.
A fixed cost
B.
A variable cost
C.
A mixed cost
D.
A step cost
【单选题】What type of cost is supervisor salary costs, where one supervisor is needed for every ten employees added to the staff?
A.
A fixed cost
B.
A variable cost
C.
A semi-variable cost
D.
A stepped fixed cost
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