假设希望将TimerA0设置为选择SMCLK时钟源，且工作在连续模式，下列控制字正确且最合理的是： A: TA0CTL = TIMER_A_CTL_SSEL__SMCLK | TIMER_A_CTL_MC__CONTINUOUS B: TA0CTL &= TIMER_A_CTL_SSEL__SMCLK & TIMER_A_CTL_MC__CONTINUOUS C: TA0CTL += TIMER_A_CTL_SSEL__SMCLK + TIMER_A_CTL_MC__CONTINUOUS D: TA0CTL |= TIMER_A_CTL_SSEL__SMCLK & TIMER_A_CTL_MC__CONTINUOUS

假设希望将TimerA0设置为选择SMCLK时钟源，且工作在连续模式，下列控制字正确且最合理的是： A: TA0CTL = TIMER_A_CTL_SSEL__SMCLK | TIMER_A_CTL_MC__CONTINUOUS B: TA0CTL &= TIMER_A_CTL_SSEL__SMCLK & TIMER_A_CTL_MC__CONTINUOUS C: TA0CTL += TIMER_A_CTL_SSEL__SMCLK + TIMER_A_CTL_MC__CONTINUOUS D: TA0CTL |= TIMER_A_CTL_SSEL__SMCLK & TIMER_A_CTL_MC__CONTINUOUS

若矩阵(A_n)满足(A^TA=0)，则(|A|=)______

TA值的大小决定于MS和BS的距离，TA的范围是0～（）μs.

时间提前量TA的取值范围为：0～63。（)

Unitcheckoneblank-filling-1 CTL:BAW309report_______ PIL:_______maintainingBAW309 CTL:BAW309descendto______ PIL:Leaving______for______BAW309 CTL:BAW309directto______,descendto_______onQNH______ PIL:Directto______descendingto_______QNH_______BAW309 CTL:BAW309descendnowto_______QFE_______ PIL:Rogerdescendingtoheight______QFE_______BAW309

已知`\a=(1,1,1)`，则`\|a^Ta|=` （ ） A: -2 B: -1 C: 0 D: 1

设A是n阶是矩阵,且存在自然数k使（A^TA）^k=0,证A=0

CTL细胞杀伤靶细胞时,下列哪项是正确的 (单选题) A: CTL无需与靶细胞接触 B: CTL与靶细胞同时受损 C: CTL具特异性杀伤作用 D: CTL释放穿孔素诱导靶细胞凋亡

已知并联支路电流iab1=10√3sin（ωt30°）A，iab2=10sin（ωt-60°）A，则总电流iab=（） A: 20sinωtA B: 20sin（ωt30°）A C: 20√2sinωtA D: 0