---Lucy doesn’t mind lending you her dic

题型:选择题

问题:

---Lucy doesn’t mind lending you her dictionary.

---I think she doesn’t, but I ________do so. I’ve already borrowed one.

A.needn’t

B.mustn’t

C.can’t

D.shouldn’t

考点:情态动词
题型:选择题

自密实混凝土配合比设计时,当水泥28天抗压强度未能进行实测时,可采用水泥强度等级对应值乘以1.1得到的数值作为水泥抗压强度值。

题型:选择题

Questions from 31 to 35 are based on the following passage: Generally, cargo is carried in containers, but sometimes it is still shipped as breakbulk cargo. During the voyage, goods may be stacked on top of or come into violent contact with other goods. And the cargo might be dragged, pushed, rolled, or dropped during unloading, while moving through customs, or in transit to the final destination. Moisture is a constant concern because condensation may develop in the hold of a ship even if it is equipped with air conditioning and a dehumidifier(除湿机). Another aspect of this problem is that cargo may also be unloaded in precipitation, or the foreign port may not have covered storage facilities. Buyers are often familiar with the port systems overseas, so they will often specify packaging requirements. If the buyer does not specify this, be sure the goods are prepared using these guidelines: Pack in p containers, adequately sealed and filled when possible. To provide proper bracing in the container, regardless of size, make sure the weight is evenly distributed. Goods should be palletized when possible containerized. Packages and packing filler should be made of moisture-resistant material. To avoid pilferage, avoid writing contents or brand names on packages. Other safeguards include using straps, seals, and shrink wrapping. Observe any product-specific hazardous materials packing requirements. Normally, air shipments require less heavy packing than ocean shipments, though they should still be adequately protected, especially if they are highly pilferable. Finally, because transportation costs are determined by volume and weight, specially reinforced and lightweight packing materials have been developed for exporting. Packing goods to minimize volume and weight while reinforcing them may save money, as well as ensure that the goods are properly packed.

Rough handling in transit will do great harm especially to()

A.containerized cargo

B.breakbulk cargo

C.palletized goods

D.none of the above

题型:选择题

酶促褐变反应

题型:选择题

工作压力为5MPa的压力容器属于( )。

A.高压容器
B.中压容器
C.中低压容器
D.低压容器

题型:选择题

疲劳开裂

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