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【单选题】
下列实验操作，不正确的是（　　）
A.
向试管里倾倒液体试剂时，试剂瓶标签应朝向手心
B.
实验剩余的药品必须放回原瓶
C.
取液后的滴管，放置时应保持橡胶乳头在上
D.
用量筒量取液体时，视线要与量筒内凹液面的最低处保持水平
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参考答案：
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【单选题】SCENARIO 3.2: Lettuce and spinach are substitutes. Lettuce and tomatoes are complements. Lettuce is a normal good. During the winter, about 20% of the lettuce crop was destroyed by flooding. Refer to ...
A.
an excess demand for lettuce.
B.
a decrease in the supply of lettuce.
C.
an increase in the demand for lettuce.
D.
an excess supply of lettuce.
查看完整题目与答案
【简答题】设循环队列 Q 的队头和队尾指针分别为 front 和 rear ,队列的最大容量为 MaxSize ,且规定判断队空的条件为 Q.front == Q.rear ,则判断队满的条件为 ,而计算队列长度的表达式为 。
查看完整题目与答案
【单选题】两侧肩胛骨下角的连线平对第几胸椎棘突?
A.
第 5
B.
第 6
C.
第 7
D.
第 8
查看完整题目与答案
【单选题】SCENARIO 3.2: Lettuce and spinach are substitutes. Lettuce and tomatoes are complements. Lettuce is a normal good. During the winter, about 20% of the lettuce crop was destroyed by flooding. Refer to ...
A.
increase; increase
B.
decrease; decrease
C.
increase; decrease
D.
decrease; increase
查看完整题目与答案
【单选题】两侧肩胛骨下角的连线平对第几胸椎棘突? ( )
A.
第4
B.
第5
C.
第6
D.
第7
E.
第8
查看完整题目与答案
【单选题】SCENARIO 3.2: Lettuce and spinach are substitutes. Lettuce and tomatoes are complements. Lettuce is a normal good. During the winter, about 20% of the lettuce crop was destroyed by flooding. Refer to ...
A.
the supply of lettuce would decrease, the price of lettuce would increase, and the quantity demanded of lettuce would decrease.
B.
the price of lettuce would increase and both the quantity of lettuce supplied and the quantity of lettuce demanded would increase.
C.
the supply of lettuce would decrease, the price of lettuce would increase, and the demand for lettuce would decrease.
D.
the price of lettuce would increase, the supply of lettuce would increase, and the quantity demanded of lettuce would decrease.
查看完整题目与答案
【判断题】OFDM技术是一种多载波调制技术，也是一种正交的频分复用（FDM）技术。
A.
正确
B.
错误
查看完整题目与答案
【单选题】【 3-1-9 】 设一个循环队列 Q[maxSize] 的队头指针为 front ,队尾指针为 rear ,队列最大容量为 maxSize ,除此之外该队列再没有其他数据成员,则该队列的队满条件是( )。 A . Q.front==Q.rear B . Q.front+Q.rear>=maxSize C . Q.front=...
A.
错误
B.
同样错误
C.
选 C 。既然不能附加任何其他数据成员，只能采用牺牲一个队列元素的整除取余的方式来区分队空和队满的条件。因此，选项 C 是合适的。选项 A 是判断队列是否空的条件，选项 B 和选项 D 都是干扰项。
D.
结论不正确
查看完整题目与答案
【单选题】一个循环队列的最大容量为m+1,front为队首指针,rear为队尾指针。那么进队操作时求队位号应该使用公式 ( ) 。
A.
Cq_front = (Cq_front+1)%m
B.
Cq_front = (Cq_front+1)%(m+1)
C.
Cq_rear = (Cq_rear+1)%m
D.
Cq_rear = (Cq_rear+1)%(m+1)
查看完整题目与答案
【单选题】5mol氯化钠溶于水配成500毫升溶液,其浓度为
A.
0.1mol/L
B.
0.5mol/L
C.
1mol/L
D.
5mol/L
查看完整题目与答案
相关题目：
【单选题】SCENARIO 3.2: Lettuce and spinach are substitutes. Lettuce and tomatoes are complements. Lettuce is a normal good. During the winter, about 20% of the lettuce crop was destroyed by flooding. Refer to ...
A.
an excess demand for lettuce.
B.
a decrease in the supply of lettuce.
C.
an increase in the demand for lettuce.
D.
an excess supply of lettuce.
查看完整题目与答案
【简答题】设循环队列 Q 的队头和队尾指针分别为 front 和 rear ,队列的最大容量为 MaxSize ,且规定判断队空的条件为 Q.front == Q.rear ,则判断队满的条件为 ,而计算队列长度的表达式为 。
查看完整题目与答案
【单选题】两侧肩胛骨下角的连线平对第几胸椎棘突?
A.
第 5
B.
第 6
C.
第 7
D.
第 8
查看完整题目与答案
【单选题】SCENARIO 3.2: Lettuce and spinach are substitutes. Lettuce and tomatoes are complements. Lettuce is a normal good. During the winter, about 20% of the lettuce crop was destroyed by flooding. Refer to ...
A.
increase; increase
B.
decrease; decrease
C.
increase; decrease
D.
decrease; increase
查看完整题目与答案
【单选题】两侧肩胛骨下角的连线平对第几胸椎棘突? ( )
A.
第4
B.
第5
C.
第6
D.
第7
E.
第8
查看完整题目与答案
【单选题】SCENARIO 3.2: Lettuce and spinach are substitutes. Lettuce and tomatoes are complements. Lettuce is a normal good. During the winter, about 20% of the lettuce crop was destroyed by flooding. Refer to ...
A.
the supply of lettuce would decrease, the price of lettuce would increase, and the quantity demanded of lettuce would decrease.
B.
the price of lettuce would increase and both the quantity of lettuce supplied and the quantity of lettuce demanded would increase.
C.
the supply of lettuce would decrease, the price of lettuce would increase, and the demand for lettuce would decrease.
D.
the price of lettuce would increase, the supply of lettuce would increase, and the quantity demanded of lettuce would decrease.
查看完整题目与答案
【判断题】OFDM技术是一种多载波调制技术，也是一种正交的频分复用（FDM）技术。
A.
正确
B.
错误
查看完整题目与答案
【单选题】【 3-1-9 】 设一个循环队列 Q[maxSize] 的队头指针为 front ,队尾指针为 rear ,队列最大容量为 maxSize ,除此之外该队列再没有其他数据成员,则该队列的队满条件是( )。 A . Q.front==Q.rear B . Q.front+Q.rear>=maxSize C . Q.front=...
A.
错误
B.
同样错误
C.
选 C 。既然不能附加任何其他数据成员，只能采用牺牲一个队列元素的整除取余的方式来区分队空和队满的条件。因此，选项 C 是合适的。选项 A 是判断队列是否空的条件，选项 B 和选项 D 都是干扰项。
D.
结论不正确
查看完整题目与答案
【单选题】一个循环队列的最大容量为m+1,front为队首指针,rear为队尾指针。那么进队操作时求队位号应该使用公式 ( ) 。
A.
Cq_front = (Cq_front+1)%m
B.
Cq_front = (Cq_front+1)%(m+1)
C.
Cq_rear = (Cq_rear+1)%m
D.
Cq_rear = (Cq_rear+1)%(m+1)
查看完整题目与答案
【单选题】5mol氯化钠溶于水配成500毫升溶液,其浓度为
A.
0.1mol/L
B.
0.5mol/L
C.
1mol/L
D.
5mol/L
查看完整题目与答案
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