将SO2通入BaCl2溶液至饱和未见沉淀,继续通入另一气体仍无沉淀,通入的气体可

题型:选择题

问题:

将SO2通入BaCl2溶液至饱和未见沉淀,继续通入另一气体仍无沉淀,通入的气体可能是(  )                                                               

A.CO2

B.NH3

C.Cl2

D.H2S

考点:单质硫金属硫化物二氧化硫三氧化硫
题型:选择题

一般认为基钦周期是最短的经济周期。()

题型:选择题

前列腺特异性抗原(PSA)是由前列腺的什么组织分泌的()

A.前列腺基质

B.前列腺间质

C.前列腺平滑肌

D.前列腺腺体

E.前列腺腺上皮细胞

题型:选择题

以下哪几种文件格式可以装入到装配体中?()1、SheetMetal.ipt2、Standard.ipt3、Standard.iam4、Standard.ipn

A.1

B.12

C.123

D.1234

题型:选择题

应对广大社会成员进行治安形势和违法犯罪发展趋势的教育,提高其( )。

A.公民基本道德意识

B.社会公德意识和法治意识

C.社会主义精神文明素质

D.治安防范意识

题型:选择题

With hundreds of millions of electronic (11)taking place daily, businesses and organizations have a p incentive to protect the. (12) of the data exchanged in this manner, and to positively ensure the (13) of those involved in the transactions. This has led to an industry-wide quest for better, more secure methods for controlling IT operations,and for deploying p security mechanisms deeply and broadly throughout networked infrastructures and client devices. One of the more successful concepts to engage the imaginations of the security community has been the development of standards-based security(14) that can be incorporated in the hardware design of client computers. The principle of encapsulating core security capabilities in (15) and integrating security provisions at the deepest levels of the machine operation has significant benefits for both users and those responsible for securing IT operations.

空白处(12)应选择()

A.operation

B.completeness

C.integrity

D.interchange

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