[不定项选择题]阈值最低的时相是
A.绝对不应期
B.相对不应期
C.超常期
D.低常期
E.正常期

[不定项选择题]阈值最低的时相是
A.绝对不应期
B.相对不应期
C.超常期
D.低常期
E.正常期

[不定项选择题]兴奋性最低的时相是
A.绝对不应期
B.相对不应期
C.超常期
D.低常期
E.正常期

[不定项选择题]神经纤维兴奋性最低的时相是
A.绝对不应期
B.相对不应期
C.超常期
D.低常期
E.正常期

[不定项选择题]最低生活保障是指国家对家庭人均收入低于当地政府公告的最低生活标准的人口给予一定（ ）
A.物质资助
B.物质和现金资助
C.现金资助
D.物质资助和生活照料

[不定项选择题]神经纤维兴奋性最高的时相是
A.绝对不应期
B.相对不应期
C.超常期
D.低常期
E.正常期

[不定项选择题]明显缩短快动眼睡眠时相的是
A.对乙酰氨基酚
B.咖啡因
C.苯巴比妥
D.地西泮
E.乙琥胺

[不定项选择题]密度最低，X线片上呈黑色的是
A.骨骼
B.软组织与液体
C.脂肪
D.气体
E.胸膜

[不定项选择题]左心室压力最低的时期是
A.等容收缩期末
B.快速射血期末
C.减慢射血期末
D.快速充盈期末
E.房缩期末

[不定项选择题]共用题干 A Ride in a Cable-car
A ride in a cable-car is one of the exciting and enjoyable experiences a child can have.In
Switzerland,which is the home of the cable-car,it is used mostly to take tourists up the slope of a mountain,to a restaurant from which one can have a bird-eye view of the surrounding country, or to a top of a ski-run,from which,in winter,skiers glide down the snow covered the slope on skis .In Singapore,however,the cable-car takes one from the summit of a hill on the main island to a low hill on Sentosa,a resort island just off the southern coast.
The cable-car is really a carriage which hangs from a strong steel cable suspended in the air.
It moves along the cable with other cars on pulleys,the wheels of which are turned by electric motors. The cars are painted in eye-catching colours and spaced at regular intervals.Each car can seat up six persons.After the passengers have entered a car,they are locked in from outside by an attendant,they have no control over the movement of the car.
Before long,the passengers get a breath-taking view through the glass windows of the modern city,the bustling harbour,and the several islands off the coast. The car is suspended so high in the air that slips on the sea look like small boats,and boats like toys.On a clear day,both the sky above and the sea below look beautifully blue.
In contrast to the fast-moving traffic on the ground,the cars in the air move in a leisurely manner,allowing passengers more than enough time to take in the scenery during the brief trip to the island of Sentosa.After a few hours on Sentosa,it will be time again to take a cable-car back to Mount Faber. The return journey is no less exciting than the outward trip. The cable-car in Singapore______.
A.takes visitors up to a mountain restaurant
B.takes skiers to the top of a ski-run
C.takes visitors to Sentosa
D.takes visitors to a high mountain