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【单选题】
[Single-choice question] Which of the descriptions of RNA is wrong
A.
The mRNA molecule contains the genetic code
B.
tRNA is the smallest type of RNA
C.
There's only mRNA in the cytoplasm
D.
RNA can be divided into mRNA, tRNA, rRNA
E.
The ribosome is composed primarily of rRNA
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举一反三
【单选题】图示等截面直梁在跨度中点承受载荷。当F单独作用时，梁的应变能为【图片】，最大转角为θ；当【图片】 单独作用时，梁的应变能为【图片】，最大挠度为f。该梁同时承受F和【图片】时的应变能为【图片】，则 【图片】等于（）。【图片】
A.
0
B.
C.
Ff
D.
【单选题】在SQL语言中，( )作用是对视图进行增，删，改操作时，要保证增，删，改的行满足视图定义中的谓词条件。
A.
With Check Option
B.
With Grant Option
C.
With Revoke Option
D.
With Grant Optional
【单选题】The trade term of a Sales Contract was CIF Shanghai, China Incoterms® 2010. The buyer covered FPA successfully before the goods shipped on board the vessel. During loading the goods on board the vesse...
A.
The insurance company would compensate the total losses of four cartons drop into the sea.
B.
The insurance company would compensate the losses of two cartons drop into the sea at port of lading.
C.
The insurance company would compensate the losses of two cartons drop into the sea at port of discharge.
D.
The insurance company would not compensate the total losses of four cartons drop into the sea.
【单选题】图示等截面直梁在跨度中点承受载荷。当 F 单独作用时,梁的应变能为 V s1 ,最大转角为 θ ;当 M e 单独作用时,梁的应变能为 V s2 ,最大挠度为 f 。该梁同时承受 F 和 M 时的应变能为 V s = V s1 + V s2 + D V s ,则 D V s 等于( A )。
A.
0
B.
M e θ
C.
Ff
D.
（ M e θ + Ff ） /2
【单选题】在我国领域内没有住所的外国人其所在国与我国未订立有关条约，当其委托我国律师代理诉讼时，从我国领域外寄交授权委托书，( )才具有效力。
A.
只需经所在国公证机关证明
B.
只需经我国驻该国使领馆认证
C.
应当经所在国公证机关证明，并经我国驻该国使领馆认证
D.
履行所在国规定的证明手续
相关题目：
【单选题】图示等截面直梁在跨度中点承受载荷。当F单独作用时，梁的应变能为【图片】，最大转角为θ；当【图片】 单独作用时，梁的应变能为【图片】，最大挠度为f。该梁同时承受F和【图片】时的应变能为【图片】，则 【图片】等于（）。【图片】
A.
0
B.
C.
Ff
D.
【单选题】在SQL语言中，( )作用是对视图进行增，删，改操作时，要保证增，删，改的行满足视图定义中的谓词条件。
A.
With Check Option
B.
With Grant Option
C.
With Revoke Option
D.
With Grant Optional
【单选题】The trade term of a Sales Contract was CIF Shanghai, China Incoterms® 2010. The buyer covered FPA successfully before the goods shipped on board the vessel. During loading the goods on board the vesse...
A.
The insurance company would compensate the total losses of four cartons drop into the sea.
B.
The insurance company would compensate the losses of two cartons drop into the sea at port of lading.
C.
The insurance company would compensate the losses of two cartons drop into the sea at port of discharge.
D.
The insurance company would not compensate the total losses of four cartons drop into the sea.
【单选题】图示等截面直梁在跨度中点承受载荷。当 F 单独作用时,梁的应变能为 V s1 ,最大转角为 θ ;当 M e 单独作用时,梁的应变能为 V s2 ,最大挠度为 f 。该梁同时承受 F 和 M 时的应变能为 V s = V s1 + V s2 + D V s ,则 D V s 等于( A )。
A.
0
B.
M e θ
C.
Ff
D.
（ M e θ + Ff ） /2
【单选题】在我国领域内没有住所的外国人其所在国与我国未订立有关条约，当其委托我国律师代理诉讼时，从我国领域外寄交授权委托书，( )才具有效力。
A.
只需经所在国公证机关证明
B.
只需经我国驻该国使领馆认证
C.
应当经所在国公证机关证明，并经我国驻该国使领馆认证
D.
履行所在国规定的证明手续
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