【单选题】果蝇的红眼基因( R )对白眼基因( r )为显性,位于 X 染色体上;长翅基因( B )对残翅基因( b )为显性,位于常染色体上。现有一只红眼长翅果蝇与一只白眼长翅果蝇交配, F1 雄蝇中有 1/8 为白眼残翅,下列叙述错误的是
D.
白眼残翅雌果蝇能形成 bbX r X r 类型的次级卵母细胞
【单选题】患者张某,述劳累后呼吸困难,体检见其两颊紫红,面色晦暗,口唇发绀,考虑:
【单选题】标志着现代宏观经济学产生的著作是:( )
【单选题】Care and cleanliness are required when installing diesel fuel filters ().
A.
to prevent the fuel system from becoming air-hound
B.
to prevent the fuel system becoming clogged with dirty particles
D.
to prevent the lubricating oil from leaking out of the filter element
【单选题】An administrator is installing Windows Server 2003 via CD on a new server with an SAS RAID array. When the administrator reaches the option to select the target installation drive, there are no drives...
A.
Restart the installation via WDS.
B.
Shut down the server and check that all RAID drives are connected properly.
C.
Restart the installation from CD and press F6 to install RAID drivers.
D.
Go into the BIOS and set all RAID drives to compatibility mode
【单选题】标志着现代宏观经济学产生的著作是: ( )
【单选题】果蝇的红眼基因(R)对白眼基因(r)为显性,位于X染色体上;长翅基因(B)对残翅基因(b)为显性,位于常染色体上。现有一只红眼长翅果蝇与一只白眼长翅果蝇交配,F 1 代的雄果蝇中约有1/8为白眼残翅。下列叙述错误的是 [ ]
D.
白眼残翅雌果蝇能形成bbX r X r 类型的次级卵母细胞
【判断题】When installing from a CD, insert the disc and wait up to an hour for the setup module to begin.
【单选题】When installing an inkjet printer for the first time, which of the following should be done FIRST? ()
A.
Print a test page from the Printer icon under the printers tab.
B.
Select the new printer as the default printer.
C.
Run the printhead alignment within the Tools folder of the printer.
D.
Ensure that the printer is set for bi-directional printing.
【单选题】果蝇的红眼基因( R )对白眼基因( r )为显性,位于 X 染色体上;长翅基因( B )对残翅基因( b )为显性,位于常染色体上。现有一只红眼长翅果蝇与一只白眼长翅果蝇交配, F 1 雄蝇中有 1/8 为白眼残翅,下列叙述错误的是
D.
白眼残翅雌蝇可形成基因型为 bX r 的极体