加油加气站的电缆在穿越行车道部分时,应穿()保护。A.胶管 B.钢管 C.塑胶管 D

题型:单项选择题

问题:

加油加气站的电缆在穿越行车道部分时,应穿()保护。

A.胶管

B.钢管

C.塑胶管

D.护套

考点:加油站操作员考试中级加油站操作员考试中级加油站操作员考试题库
题型:单项选择题

下列有关叶芽的叙述,错误的是()。

A.芽中具有分生组织

B.芽有顶芽与侧芽之分

C.芽原基直接发育成叶

D.芽轴发育成植物的茎

题型:单项选择题

关于血氧含量,下述哪项描述是错误的()

A.是血浆结合氧与血红蛋白溶解氧之和

B.34×SO2+PO2×0.0031

C.受SO2影响很大

D.受Hb含量影响很大

E.受PO2影响较小

题型:单项选择题

It was the night of the full moon, a time which always drives Java’s young people mad with excitement.

Fireworks were lit long before the moon (1) . The big noise brought people out (2) the warm night to enjoy the interesting scene. Everywhere, there were the paper remains of (3) fireworks lying on the ground. Little boys (4) more and covered their ears as they waited (5) for the explosions.

The moon appeared above the horizon: huge, (6) ball high above the city, and the (7) filled with people, as Java began to enjoy one of the year’s greatest (8) ."the Night of the Full Moon", a festival that is especially popular (9) young people.

More and more young Javanese (10) together and walked slowly through the (11) . Joking and chatting, they moved towards the mountain (12) the city. They continued to climb (13) they reached the old temple at the (14) of the mountain.

After they were (15) the temple, they drank their water and ate their mooncakes—delicious home-made ones, (16) of dried fruit and nuts. Outside, on the mountain, young people (17) cross-legged in circles, chatting and telling each other jokes. And (18) , in their hundreds, more young people continued to make their way up the mountain to (19) the brightly shining moon.By midnight, the fireworks had stopped shooting up from the (20) city in the valley below them. But during the night, the sound continued to be heard from the distance.

9()

A.for 

B.to 

C.with 

D.in

题型:单项选择题

如图6-73,四边形ABCD的对角线AC,BD相交于O,S△AOB=4,S△COD=9,则四边形ABCD的最小面积为()。

A.22

B.25

C.28

D.30

E.32

题型:单项选择题

下图为我国北方某冶炼厂周边土壤中污染物铜含量等值线图。读图,土壤铜含量()

A.因河水稀释而逐渐变小

B.从冶炼厂向北递增幅度小

C.高值区沿盛行风向延伸

D.在居民点大于200m

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