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【单选题】
饮片近边缘处1~4mm处有一棕黄色隆起的木质部环纹或条纹,偶见光亮的金黄色长柔毛的药材为A.
绵马贯众
B.
大黄
C.
黄芩
D.
狗脊
E.
黄连
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反馈参考答案：
举一反三
【多选题】以下关于千分尺读数正确的是
A.
测量前，应对好零位
B.
测量时利用测力装置使两量面与被测工件接触
C.
从固定套管上露出的刻线读出被测工件毫米整数和半毫米数
D.
不足一格的数，即千分之几毫米，由估读法确定
【单选题】请指出以下情况引起的误差：（1）千分尺的零点不准；（2）游标尺的分度不均匀；（3） 电流计零点漂移；（4） 天平不等臂；（5）电压起伏引起电表读数不准；（6） 不良习惯引起的读数误差。属于系统误差的是：
A.
（1）（2）（3）
B.
（1）（2）（4）
C.
（2）（3）（5）
D.
（2）（4）
【单选题】Today, most of people won't study either Greek or Latin because ______.
A.
they are no longer important
B.
people do not have enough time
C.
they are no longer existed
D.
people can not learn them well
【单选题】What is the main idea of the passage?
A.
Most old people live longer today after an illness than people did years ago.
B.
Many old people are put into nursing homes by their families, who do not visit them regularly.
C.
Most elderly people are taken care of by their families, who assume the responsibility for different reasons.
D.
Most elderly people are satisfied with the better ways of caregiving that social workers have come up with.
【简答题】若把地球大气看作温度恒定为 K 的等温大气层 , 用 和 分别表示地表的压强和地球半径 ;(1) 定义 为地球大气标高 , 试求此标高的数值 , 并对此标高的物理意义作出解释 ;(2) 试给出地球大气层总粒子数 的计算公式 , 并 (3) 求出地球大气总粒子数 和总质量
【单选题】Passage Two Most people want to work, but it has become more difficult in today's world to find work for everybody. The economies(经济) of the world need to grow by 4% each year just to keep the old num...
A.
people will have no jobs
B.
people can still have jobs as before
C.
4% of the people will have jobs
D.
97% of the people will have jobs
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